Despite all the positive response to single males in this thread, most couples do not want to be contacted by them. Most swinger couples are here to, surpisingly, interact with other swingers. I am not saying single males should not be allowed here, but they are not a priority on this site yet occupy the most bandwidth for how much they are in demand.
We gave up on single males because they didn't behave properly and weren't worth the hassle. The bad behaviour was pretty consistent among them. Our friends have the same experiences and complaints.
It seems that the stressing single males to not message invites more messages. Then there are the fake "bi" guys who just want to fuck your wife or the single g uys with the phantom wife; the poor lady never has time to chat or talk and always has something come up just before meeting and feels but so she lets her partner go on to play alone with us. We also do not view persistent messaging as a turn on. "Single" guys that are partnered and trying to find something on the side and figure Swingers are slutty and easy targets. These are just a few examples - and all of them demonstrate poor adherence to consent courtesies right at the start. Red flags come up easy and constantly with single males and we don't want to waste our free weekends, that are few and far between, on this when the odds of having a good time with couples is much higher.
Supply and demand - too much supply usually means low quality which floods our inboxes with desperate guys with no game that are not very self-aware. Compare this to Unicorns who are in small supply and can get what they want simply by checking their inbox.
We found that men in couples behave much better which means I don't have to act as a security guard. We just select the option to not allow messages from single males.