OK, this is partly gripe, partly humour (it's true that truth is stranger than fiction)....
OK, here's my list of top 10 DON'TS for swingers adverts.
1) Don't say "genuine couple" or "no timewasters please".
I can almost hear the timewasters themselves saying "aww shucks, that rules us out then".
2) Don't say "First timers" then accompany the advert with a pic of you both in a foursome scene!
3) Don't blur out the faces, and then forget to blur out the American sockets in the background.... from where you stole the bloody pictures in the first place.
4) Don't post as a single male and a couple using the same contact email address.... it's highly suspicious, especially when you can't even agree on what age you are across the adverts
5) Don't claim to be hung like a horse, then shy away from proving it. If you're going to shout about it - put your money (or your cock) where your mouth is. Erm, you know what I mean!
6) Understand the English language and comprehend what "couples seeking females" means. That means if you're a single guy, don't post there. Not only will it increase the number of folk seeing your advert, it will increase the number of them thinking you're as thick as a plank.
7) If you must put up a pic of your cock, try to post it along with a picture of the rest of you. I'm sure it looks lovely to you, and is a very close friend, but they really do all look rather similar (with the exception of SellafieldSimon's luminous green one).
8 ) 'Professional' is (stop grinning) spelt with only one F and 'intelligent' has two Ls.
You have no idea how daft "Proffesional, inteligent guy" looks.
9) Try to maintain a consistent notion of how many of you there are. 'We' means more than one of you. Therefore "I am a couple" is a) logically absurd b) indicative of a single bloke thinking he's a couple.
10) If you're in Berkshire, keep it that way. Don't post an advert saying you're in Berkshire, then change to Bedfordshire as soon as some highly fanciable woman posts her Luton advert.