I signed myself up to Plentyoffish and had a huge response prob 300 messages in 2 days which was amazing for the ego. There were LOADS of guys obviously after one thing, but what appeared to be a lot of genuine guys too, i exchanged details with about 10 but then when it came down to it I have been too busy to meet with any of them. I will def, def give it a go in about 6 months when I feel a bit more open to meeting that special someone.
My best friend lives in London and has never really had a serious BF I did a profile for her on Mysinglefriend and she has now been with the guy she met on there for 2 years, he is very close to popping the question (i think) so it def works.
I know at lest 4 other couples that have met this way, give it a go