OKCupid (OKC) provides an algorithm that lets you score how important different questions are to you, which in turn lets you narrow down potential matches. At this point, their monthly fees are low compared to industry average.
Emails from potential scammers (IP address and specified city mismatch, I'm guessing) are flagged with a message warning of funds transfers.
I'm a paying member of OKCupid, but occasionally use it as a free user.
I spent days answering all their questions as truthfully & honestly as I could.
In the event that the terms and conditions relating to a feature you may have selected or that may be included in your Rate Plan conflicts with the Metro PCS Terms and Conditions of Service, your Rate Plan shall control.