We belonged to all those lam i.e. SLS, lovevodooo, aff, lifestyles sites and a few more...The problem with all of them they freaking charge you up the booty.....craigslist is good but geesh it has too many spammers now I'd have to say 90% so we settled on
Swingers Lifestyle Community This site we found and while it's not super popular it is totally free....just our two cents of course...we have had some success...we met 3 couples and had a wonderful time