Despite the number of acquisitions Apple has made over the year, the Cupertino company is not done buying up companies just yet. Indeed, Apple has just purchased Topsy, a company that specializes in Twitter analytics, for a reported $200 million. For the uninitiated, Topsy offers a suite of tools to help anyone search and analyze tweets to as far back as when the social media company started back in 2006. Companies often use Topsy to look for how often a particular keyword is tweeted, be it a person, a subject or a certain event, to see what's popular with the public at any given moment. It's not exactly clear what Apple will do with the acquisition, though hopefully it'll fare much better than its other foray into social networking.