I haven't made a Girlfriend off the net, but i have met a few of them - just for the experience and to try out some new moves ..oh, and because i was bored and spend most of my day on the net (at work!).
Some i have met and there pic looks nothing like them. Like, they send you a head shot photo but there body is like a size 20. Or they send you one that is 2 years old and since then they have put on 50 pounds and shaved their head.
I met..a 10 off the net, she was a virgin and all, and i came soooo damn close to f'ing her..but, her parents kinda interrupted! She isn't a virgin anymore, but im meeting up with her again next month, ive learnt alot since then and we shall see how far i get this time
I have made alot of good friends off the net however. And the chick mentioned above would be good GF material if she didn't live so far away!
Each case is unique and you can't generalise about every chick on the net being this or that.
Good luck with it!