Sorry to hear about your experiences. Always worth googling their ids and email addresses, and even names.
For me, I did that. I met Shei playing dominoes in Yahoo (so not a dating site). I found she played a lot with one guy, just at the time we were starting to get serious. To cut a long story short - she terminated her "friendship" with that guy. I know that, because I spoke to the guy using another id (pretending to be Thai - seems he has a love of Asian girls, even schoolgirls). We were not yet bf and gf at that time. Shei also works in an internet cafe (so I was always a bit suspicious about her time spent, seeing as we chat only 1-2 hours a day).
Using her name, I found out quite a lot in google. About her exams passed for one. I also found out she had a Filipina Friend Finder account. In a fit of rage, I cracked her password (naughty naughty, but using a birthdate as a password is not very secure). Also I did that in ICQ. I should not do it - but she lied to me once, and it was definately worth the check.
