I do not have Facebook, nor twitter, nor linked in, or any other "online presence". And I doubt I ever will. Just not my thing. This is only the second chat site I have ever been on. The first was with a life long hobby.
I think it is beyond ludicrous to suggest someone needs a online presence. It indicates to me shallow thought and lack of creativity that anyone would insist online social presence is a necessity.
Meeting someone of the opposite sex on a site like this is a narrow proposition. I do know of two people here that met and seem to be doing well together, but the odds are astronomical if one considers only the location proximity issue alone.
My opinion, meeting on a online date site can be a valid venue. I am not on one, but I do think they can be beneficial. This is not a date site though.
For me, I prefer, if it was going to happen, to meet someone in my church, or from a local area church, or in a supermarket, at a wedding, or a party, maybe a meet up group, etc.
Bars and clubs. No way ! I think they generally are satans playground.