Hopefully you mean how did the internet affect crossdressing, because if the internet was responsible for effecting crossdressing... well?!
The internet is a valuable learning resource for crossdressers and their loved ones. You do have to be selective though. When I first googled 'crossdressers' I came up with all sorts of bizarre sites - some porn, some anti-CD, some supportive and some not.
The internet must be applauded, at the very least, for allowing crossdressers to feel that they're not alone. And that there is a wide world of support, opinion and help out there.
sorry
