Will E-Learning take training Industry?

Today’s training world holds anew buzzword “E-Learning” will this internet training field make it big in this industry from the contemporary training style …
What are the pros and cons … players like
www.edshop.com and its very highly reviewed edshop education complex and like www.freeedu.com and its courses from dpec and others like www.intraware.com etc have already sunk their teeth in … Could u give me some inputs on the same .. ?