My stepsister and her husband met online and have been married for at least seven years (thats how long I've known them). They are very happy together and fit together very, very well. I have another good friend who met his wife online through some sort of singles chatroom. As time goes by, I think more and more people will find a significant other via the internet...it only makes sense. People spend more time at work (and thus more time online) and have busier, more hectic lives than we used to; the internet is the logical place to meet someone. I don't see the harm in it; I think I may be one of the minority though
Good luck whatever you DO try, though!!