Single Life, Dating & How do these people get my email address?

I just cleared out the spam email in my account.  I think at least 2/3 of the messages dealt with single / dating websites.

Now, I have in the past tried eharmony and a couple other sites, but nothing ever developed.  And I'm fairly certain it has been at least 3-4 years since I have logged onto one.  It seems my absence has drawn lots of looks by other singles, as every ad promised that someone had been searching for me.  This makes me laugh, since most of the websites are ones I have never logged into - so how did they find my picture or my name?

The most interesting one was the F@#$book, who sent several persistent messages.  I didn't open it to see what services were offered - although the title seemed to suggest what was the currency anyway.

One message heralded Facebook's new dating website, but I didn't bother to open it either.  I think Facebook already knows too much about me to add my dating life to it via their dating service.

I'd admit that I'm a bit interested in dating. But I also recognize that right now it is not the time with school, work, and parenting.  Maybe in the fall, I'll have more time (although that list is getting a bit long too).