It's not my thing, although I have friends who have met their SO through online personals.
I have an aunt (who I dislike for other reasons) who always has a
www.boyfriend. She doesn't use online dating as a supplement for having a real social life, like some of my friends who would do things like have friends and go out in addition to online personals. She's dependent on Black Planet for finding her next loverman--and that's when I think it goes too far.