Twitter's "Who to follow" tool, which harnesses users' social-media connections to help them find interesting people to follow, is more than just a gimmick, argues MG Siegler. The feature will vastly increase the rate at which people expand their follower lists, vastly boosting Twitter's interconnectivity -- albeit potentially at the cost of weakening the site's signal-to-noise ratio. "[T]his is going to greatly strengthen Twitter's social graph. It's seriously like social steroids," Siegler writes.

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