I'm so glad Lisa admitted to this first, as I didn't want to - but I too have done this... albeit many years ago.
At the time, it was a way to make a few extra quid, but it's not something I feel proud of, nor do many of my friends/family know about it.
It's not as seedy as it sounds. I would, literally, sit there in my PJs whilst my husband was out working during the night, and just chat.
You'd be surprised actually, lots of men would be really shy and would never actually get round to.. er... 'intimate chat'. I remember there was this one Irish guy who called every other night and just talked to me about his business. It was like chatting to a mate, until it got to the end when it would be a bit awkward and we'd be like "ok, er, I guess I'll be going". I never knew if he was expecting me to make the first 'move', or not.
Funnily enough, my husband never knew about it. I know for a fact he wouldn't have liked it though, and it's not something I'd ever be comfortable with either.