thaiophilus

Stationary taxis hanging around at tourist-trap locations just after  BTS and MRT have shut down ( which is *before* midnight) are the worst offenders. If you walk to a main road and wave at a moving taxi with his "free" (ว่าง) sign turned on, there is less likely to be a problem. If he refuses to use the meter, don't argue, just walk away and flag another one. And if your new Thai friend does the negotiating, all the better.

I believe sex toys (and presumably that includes BDSM stuff) are technically illegal in LOS, though you wouldn't think so after a walk through Patpong night market or along Pattaya Beach Road.

While adding a few locations to my Google Maps saved places, I came across some reviews for the Golden Cock which make entertaining reading. Google has tagged it not "legendary infamous gay sleaze bar" (and I mean that in a good way ) but "karaoke bar" and so, despite all the external evidence, that's how the reviewers have read it.
Incidentally, kudos to the bar for finding Indian music for one party to dance to. I wonder who was the more bemused.

While adding a few locations to my Google Maps saved places, I came across some reviews for the Golden Cock which make entertaining reading. Google has tagged it not "legendary infamous gay sleaze bar" (and I mean that in a good way ) but "karaoke bar" and so, despite all the external evidence, that's how the reviewers have read it.
Incidentally, kudos to the bar for finding Indian music for one party to dance to. I wonder who was the more bemused.

The website still seems active, with updates in September 2019 (or maybe even more recently, I didn't look in detail). As ever, there's no way to verify the accuracy or timeliness of their coverage in any particular area.

The website still seems active, with updates in September 2019 (or maybe even more recently, I didn't look in detail). As ever, there's no way to verify the accuracy or timeliness of their coverage in any particular area.

From the picture, it appears to have not merely a manual key, but a TSA-approved one. So any criminal with access to the internet can open it in seconds. Indeed, the legend on the lock even  tells the thief which key is needed.

From the picture, it appears to have not merely a manual key, but a TSA-approved one. So any criminal with access to the internet can open it in seconds. Indeed, the legend on the lock even  tells the thief which key is needed.

Erawan Museum and Muang Boran are two of Khun Lek Viriyaphan's legacies, the third being the Sanctuary of Truth at Pattaya.
All are sui generis and well worth a visit, though IMO the S of T is overpriced.
BACC (National Stadium) has interesting free exhibitions though some are perhaps a bit predictable.
As for  "beyond the main tourist destinations", I bet some of the regular posters could recommend many more, but the margin of this post is not big enough to contain them . Here are a few from my eclectic collection:
There are other preserved/restored old houses in Bkk: MR Kukrit's house in Sathon, the Siam Society's Kamthien House on Sukhumwit, Suan Pakkad Palce in Pathumwan, the Bangkokian Museum on Charoen Krung 43.
For an inexpensive day out take the Chao Phraya Express to Nonthaburi and lunch at a riverside seafood restaurant. Or take the Mahachai Shortline from Wong Wiang Yai to Samut Sakhon.
For a night or two away from the crowds, stay at the Bangkok Tree House in Bang Krachao (short taxi ride from BTS Bang Na.) 
Looking for  a peaceful green oasis in the middle of Sathon? visit the Teochew cemetery.
Interested in bronze statues? have a wander down Captain Bush Lane.
And if you want to visit somewhere really obscure with a view, how about the Chee Chin Khor Moral Up-Lifting for Benefiction Foundation [sic]? You've probably seen it from the river, but few  people get  close enough on foot to enjoy the view from the top. Or, heading east, the eccentric edifice of Wat Dhammamongkol off Sukhumwit 102?
 
 
 
 
 

Erawan Museum and Muang Boran are two of Khun Lek Viriyaphan's legacies, the third being the Sanctuary of Truth at Pattaya.
All are sui generis and well worth a visit, though IMO the S of T is overpriced.
BACC (National Stadium) has interesting free exhibitions though some are perhaps a bit predictable.
As for  "beyond the main tourist destinations", I bet some of the regular posters could recommend many more, but the margin of this post is not big enough to contain them . Here are a few from my eclectic collection:
There are other preserved/restored old houses in Bkk: MR Kukrit's house in Sathon, the Siam Society's Kamthien House on Sukhumwit, Suan Pakkad Palce in Pathumwan, the Bangkokian Museum on Charoen Krung 43.
For an inexpensive day out take the Chao Phraya Express to Nonthaburi and lunch at a riverside seafood restaurant. Or take the Mahachai Shortline from Wong Wiang Yai to Samut Sakhon.
For a night or two away from the crowds, stay at the Bangkok Tree House in Bang Krachao (short taxi ride from BTS Bang Na.) 
Looking for  a peaceful green oasis in the middle of Sathon? visit the Teochew cemetery.
Interested in bronze statues? have a wander down Captain Bush Lane.
And if you want to visit somewhere really obscure with a view, how about the Chee Chin Khor Moral Up-Lifting for Benefiction Foundation [sic]? You've probably seen it from the river, but few  people get  close enough on foot to enjoy the view from the top. Or, heading east, the eccentric edifice of Wat Dhammamongkol off Sukhumwit 102?
 
 
 
 
 

Erawan Museum and Muang Boran are two of Khun Lek Viriyaphan's legacies, the third being the Sanctuary of Truth at Pattaya.
All are sui generis and well worth a visit, though IMO the S of T is overpriced.
BACC (National Stadium) has interesting free exhibitions though some are perhaps a bit predictable.
As for  "beyond the main tourist destinations", I bet some of the regular posters could recommend many more, but the margin of this post is not big enough to contain them . Here are a few from my eclectic collection:
There are other preserved/restored old houses in Bkk: MR Kukrit's house in Sathon, the Siam Society's Kamthien House on Sukhumwit, Suan Pakkad Palce in Pathumwan, the Bangkokian Museum on Charoen Krung 43.
For an inexpensive day out take the Chao Phraya Express to Nonthaburi and lunch at a riverside seafood restaurant. Or take the Mahachai Shortline from Wong Wiang Yai to Samut Sakhon.
For a night or two away from the crowds, stay at the Bangkok Tree House in Bang Krachao (short taxi ride from BTS Bang Na.) 
Looking for  a peaceful green oasis in the middle of Sathon? visit the Teochew cemetery.
Interested in bronze statues? have a wander down Captain Bush Lane.
And if you want to visit somewhere really obscure with a view, how about the Chee Chin Khor Moral Up-Lifting for Benefiction Foundation [sic]? You've probably seen it from the river, but few  people get  close enough on foot to enjoy the view from the top. Or, heading east, the eccentric edifice of Wat Dhammamongkol off Sukhumwit 102?
 
 
 
 
 

Erawan Museum and Muang Boran are two of Khun Lek Viriyaphan's legacies, the third being the Sanctuary of Truth at Pattaya.
All are sui generis and well worth a visit, though IMO the S of T is overpriced.
BACC (National Stadium) has interesting free exhibitions though some are perhaps a bit predictable.
As for  "beyond the main tourist destinations", I bet some of the regular posters could recommend many more, but the margin of this post is not big enough to contain them . Here are a few from my eclectic collection:
There are other preserved/restored old houses in Bkk: MR Kukrit's house in Sathon, the Siam Society's Kamthien House on Sukhumwit, Suan Pakkad Palce in Pathumwan, the Bangkokian Museum on Charoen Krung 43.
For an inexpensive day out take the Chao Phraya Express to Nonthaburi and lunch at a riverside seafood restaurant. Or take the Mahachai Shortline from Wong Wiang Yai to Samut Sakhon.
For a night or two away from the crowds, stay at the Bangkok Tree House in Bang Krachao (short taxi ride from BTS Bang Na.) 
Looking for  a peaceful green oasis in the middle of Sathon? visit the Teochew cemetery.
Interested in bronze statues? have a wander down Captain Bush Lane.
And if you want to visit somewhere really obscure with a view, how about the Chee Chin Khor Moral Up-Lifting for Benefiction Foundation [sic]? You've probably seen it from the river, but few  people get  close enough on foot to enjoy the view from the top. Or, heading east, the eccentric edifice of Wat Dhammamongkol off Sukhumwit 102?
 
 
 
 
 

Found it, though the map wasn't obvious. Many thanks.
I was expecting the map to be a separate web page with a link from one of the tabs, but instead you have to open the "powered by issuu" viewer in the middle of the page, make it full-screen then scroll through to page 38 or so.
Couldn't find any way of downloading it, though. "Save as" just saves the web page, not the magazine. Following the "share" link to the original at issu.com it has a "download" option but it's disabled. Still, a PNG screen grab is OK.

There are taxis everywhere. Just be sure they turn the meter on.
Erawan Museum is between Pu Chao and Chang Erawan BTS stations. It's probably best to get off at Pu Chao, so the taxi will be on the correct side of the road to drop you at the gate. (if you get a taxi at Erawan he will probably have to drive back to Pu Chao to make a U-turn  )
Wat Asok and Ancient City are easily reachable from Kheha station.
The signs and announcements may not make it clear, but for all these stations on the new part of the BTS Sukhumwit line you will need to change trains at Samrong. Just walk across to the other platform and take tne next train.

There are taxis everywhere. Just be sure they turn the meter on.
Erawan Museum is between Pu Chao and Chang Erawan BTS stations. It's probably best to get off at Pu Chao, so the taxi will be on the correct side of the road to drop you at the gate. (if you get a taxi at Erawan he will probably have to drive back to Pu Chao to make a U-turn  )
Wat Asok and Ancient City are easily reachable from Kheha station.
The signs and announcements may not make it clear, but for all these stations on the new part of the BTS Sukhumwit line you will need to change trains at Samrong. Just walk across to the other platform and take tne next train.

They seem to. There's usually a good atmosphere on stage, with plenty of interaction between the boys and with the customers, not just glumly staring at their phones like in some other places. Whether the boys themselve are to your taste,  you will (as ever) have to discover for yourself, but a visit is recommended even if you don't off anyone.
Oh, and for just B300 you too can sponsor your very own chuck-wow contest

They seem to. There's usually a good atmosphere on stage, with plenty of interaction between the boys and with the customers, not just glumly staring at their phones like in some other places. Whether the boys themselve are to your taste,  you will (as ever) have to discover for yourself, but a visit is recommended even if you don't off anyone.
Oh, and for just B300 you too can sponsor your very own chuck-wow contest

There are taxis everywhere. Just be sure they turn the meter on.
Erawan Museum is between Pu Chao and Chang Erawan BTS stations. It's probably best to get off at Pu Chao, so the taxi will be on the correct side of the road to drop you at the gate. (if you get a taxi at Erawan he will probably have to drive back to Pu Chao to make a U-turn  )
Wat Asok and Ancient City are easily reachable from Kheha station.
The signs and announcements may not make it clear, but for all these stations on the new part of the BTS Sukhumwit line you will need to change trains at Samrong. Just walk across to the other platform and take tne next train.

No, nothing like that.  The atmosphere in Nature Boy is a little less formal than the Twilight (now Patpong) style bars. There was a conversation (paraphrased)
(I have already invited near-naked boy over from stage and bought him a drink)
Me: you sa-moke me?
Boy: Here?
Me: Here.
Boy: OK but you pay bar same same we go room.
(All this was of course in the interest of trying everything once. So now when anyone says "have you no shame?" I can truthfully answer "no" )

In gogo bars they generally aren't wearing enough to conceal the loot and in host bars, as others have said, this isn't usually a problem.
You are more likely to lose money through confusing red 100 and purple 500 baht notes in a dimly-lit bar, or even by forgetting you gave 1000 and receiving change for 500 - which is why  waiters often make a point of telling you what you handed over, to avoid arguments later.

No, nothing like that.  The atmosphere in Nature Boy is a little less formal than the Twilight (now Patpong) style bars. There was a conversation (paraphrased)
(I have already invited near-naked boy over from stage and bought him a drink)
Me: you sa-moke me?
Boy: Here?
Me: Here.
Boy: OK but you pay bar same same we go room.
(All this was of course in the interest of trying everything once. So now when anyone says "have you no shame?" I can truthfully answer "no" )

I can't imagine the company that manufactures the cards will be too pleased by this loss of revenue...

Definitely a bad idea. But there are any number of good reasons why someone might be interested in these things.   Not pollution, not worries, knowledge!
It might be an interest in the history of "our" community. It might be curiosity about changes of bar style or policy. It might be any number of things.
And there's an old saying about those who don't study history...

Others have answered the rest of this, seriously and otherwise, but here are several possible answers, also of varying degrees of seriousness, depending on nation, culture and century:
1) Mail was not delivered, people collected it from the post office. See "Poste Restante".
2) In smaller communities, the postman knew where everyone lived (not the address as such, just how to get to the house in question).
3) Only the rich could afford the post, and everyone knew where they lived.
4) In feudally-structured societies, the overlord extracted taxes and raised armies from his underlings in exchange for not killing them. His tax-gatherers knew exactly where they lived. There was no "government" or "citizen" and hence no need for them to communicate.
 

Ah. Yes, I see the difference. The OYO branding is new. It's difficult to determine the real room prices now, with so many booking site "special deals", but when I stayed there in January 2019 the rate was B1090 for a "single superior" room.
Rates I have paid (for early January of the year noted):
2007: B688
2008: B708
2009-2012: B808
2014-2016: B868
2017-2018: B950
2019: B1090
I don't seem to have records for 1996-2006, when my bookings were probably made by fax (and there were real multipart airline tickets!).