Other sites target highly specific demographics based on features like shared interests, location, religion, or relationship type.
Online dating services also differ widely in their revenue streams.
Seeking Arrangement has banned 60,000 profiles in the last 10 months, or about 220 a day.
Here's what they've found are the ingredients in the typical scam profile.
Lovin' God Scammers are mostly Catholic, or at least they say they are.