Despite growth, Twitter still disappoints

Twitter, industry analysts generally agree, is a company doing really cool things, but it continues to disappoint investors.
Tuesday, when Twitter reported its first-quarter results, was no exception. The company reported user growth, adding 5 million users for a total of 310 million, and posted $595 million in revenue.
Twitter's good news was quickly overshadowed by the fact that the company didn't meet analysts' expectations of nearly $608 million in revenue for the quarter.
The social networ