Plenty Of Fish (POF) is a dating that also charges a monthly fee if you wish to use their premium services.
The problem is that they have NO verification othat they use to verify an account other than email verification.
I have come across fraudulent profiles using stolen photos of women (the women I have come across complain about men doing the same thing) wanting to meet and date and possibly get married.
I have contacted the site administration about this problem and they have all but ignored this issue.