I, ah, I met my boyfriend through an MMORPG, so I'm hardly against the thought of online dating. I will say, the time we are together in meatspace is amazing. We've known each other for years now, and he's my closest friend.
The distance sucks, but Skype calls help (and of course, if you can afford it, visiting is the best choice).
I'll agree that you should be careful if you do try to meet someone online. If at all possible, try to meet up in a public setting, or bring friends along with you. S'what I did. :3