Clo - I was the same. Lurked for a long time before I actually joined. I've got a Facebook account but it's been so long since I've used it, Facebook has actually logged me out.
I daresay it must be helpful for some people, but - for a site with such a heavy emphasis on "friends" - I always found it curiously impersonal. Just never got into it at the best of times then later on I grew to actively dislike it. It's a highly effective and dangerous misinformation machine.
Nicky - Didn't really get any of that. I'm not a gambler in any way, tbh, but fair play to you if you manage to making a living from it.
Edit: Now HW's smilies seem to be breaking the formatting. Gah. I like their smilies too, I don't want to stop using them :-/