As Twitter prepares for its IPO, there's still no proof that they know how to make Twitter profitable:

...in a regulatory filing Thursday, Twitter confirmed a more modest financial reality: It’s a perennial money loser. The company hemorrhaged $69 million in the first half of this year, an increase of 40% from the same period in 2012.

You'd think that would be off-putting for Wall Street. But then, what do I know? I'm clearly not a financial expert; I've never even destroyed a single national economy!