Twitter話題（ソーシャルメディアを使った予想）ついでに、Twitterがどこから収益を得ているのかについて（ht @gshibayama）： Twitter Has a Business Model: ‘Promoted Tweets’ The promoted tweet is one of three streams of revenue Twitter will have available, including a data fee from search engines indexing Twitter in real time, such as Google, Yahoo and Bing, and the coming “professional accounts.” 三つの収益源が示されている： Promoted Tweet Data Fee Professional
