I got an account a while back and never used it. Google indexed it under my name, so I recently updated the profile and log in occasionally. I don't have a lot of interest in using it all the time, but a couple of weeks ago I needed to contact someone in my family in an emergency, and couldn't reach her. I found one of her Facebook friends and asked the friend to tell my relative I was trying to reach her. As a tool, it's not one I need much. But I do understand why some people really like it.
Actually, I have an account there, but i has been long time I don't go there and I even forgot my login id.
No, I do not have a facebook account. I used to be a regular at Orkut. But, these days, I spend most of my time online working or on DP.