Michael R. Bloomberg’s presidential campaign has been experimenting with novel tactics to cultivate an online following, or at least the appearance of one.

But one of these strategies — deploying a large number of Twitter accounts to push out identical messages — has backfired. On Friday, Twitter began suspending 70 accounts posting pro-Bloomberg content in a pattern that violates company rules.

“We have taken enforcement action on a group of accounts for violating our rules against platform manipulation and spam,” a Twitter spokesman said. Some of the suspensions will be permanent, while in other cases account owners will have to verify they have control of their accounts.

As part of a far-reaching social media strategy, the Bloomberg campaign has hired hundreds of temporary employees to pump out campaign messages through Facebook, Twitter and Instagram. These “deputy field organizers” receive $2,500 per month to promote the former New York mayor’s candidacy within their personal social circles, in addition to other, more conventional duties. They receive campaign-approved language that they can opt to post.

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