PoF wasn't that big back then (in the UK anyway) it only came to my attention toward the end of my dating time and I had a favourite (pay)site on which I'd met some good, serious people. Of course there were players/wasters too but after meeting one of them you had 2 choices; either you let it affect your decision to date or your learnt from it and carried on. The people who end up in relationships are the ones who never ever stop looking and the old saying 'it'll happen when you least expect it(stop looking),' doesn't hold true anymore because there are people actively looking to get there before you, for both the right and wrong reasons (looking for relationships or just sex or free meals etc.)
As I said above it worked for me, my partner and I have been together for about 8 years now.