I remember posting a blurb about twitter back in late 2006, early 2007 in Genmay, where pretty much everyone said the same thing. 'Twitter is retarded. Twitter will never go anywhere'., blah blah blah. At the time, Twitter was just starting to get a little press, and then blew right the fuck up at the 2007 SXSW.
Agree with them or not, you can't say that Twitter hasn't become an omnipresent component of digital society today.
Point is, assuming things are fail in todays world is a suckers bet so early after introduction.