Twitter's Business Model

A lot of people have talked about whether or not Twitter has an actual business model, and if so what it actually entails. Recently Twitter has made deals with Bing and Google to integrate Twitter data into "real-time" search results, which sounds like a pretty good fit for all parties involved. But aside from search, what other outlets does Twitter have to monetize its user content?

David L. Smith, from Harvard Business Publishing, outlines a couple ways he sees that Twitter can generate revenue from its massive user base in his post "Twitter's Business Model: Brilliant or Non-Existent?" On top of search, David mentions other potential revenue streams such as Ecommerce, network marketing, and Twitter applications.

According to recent network data, Twitter's growth has been slowing down a bit lately. A tweak to Twitter's business model may help resolve both its monetization issues and growth issues. Maybe Twitter can kill two birds with one stone?