Does Twitter make tons of money? How? I decided to try it out
(http://twitter.com/LA2) and I don’t pay anything and I don’t see
any advertising. So how do they make money? From sending SMS?
Many years ago I heard about there.com, and they seem to be around
still. I guess there are at least a dozen (?) similar virtual
worlds out there. But all everybody is talking about is Second
Life. How can that be? Superior marketing?
http://en.wikipedia.org/wiki/There.com
http://en.wikipedia.org/wiki/Category:Virtual_reality_communities (Source: gmane.education.web4lib)