Twitter has been open about its desire for advertising to be a pillar of its revenue strategy. The company has launched a number of experiments with advertising on the site, rolling out Promoted Tweets , which serves up ads based on keywords in Twitter search queries; and Promoted Trending Topics . But Twitter cracked down on in-stream advertising on third-party clients; which was thought to be a direct attack on some of the Twitter ad networks in the space, such as 140 Proof, Ad.ly and others (it turned out that the new TOS didn’t kill these companies)

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140 Proof Provides A Piece Of The Twitter Advertising Puzzle