I just got engaged to a beautiful Korean lady I met on KoreanCupid after I searched many other sites. We contackted once on the site, exchanged emails, facebook profiles and skype, so we were sure both parties are for real. Then I visited her in person. We are both very happy and in love!!
You can easily spot a scammer. Never include personal info, send money. Verify the person on fb and skype. KoreanCupid screen their members.
Like all sites, scammers are everywhere. Avoid anyone asking for money.
Hans does recommend KoreanCupid.com to friends/family