Who says Twitter is a pointless pastime? In Toronto, Virgin America is giving free flights to Twitter users whom it deems "influencers." To determine a user's influence, the airline is relying on Klout, an analytics service that tracks users' influence on Twitter based on variables like the quality and number of followers and retweets. The offer includes free round-trip airfare (Wi-Fi included) between Toronto and San Francisco, or Los Angeles between June 23 and August 23.
