Twitter culls spammers from follower lists overnight

If your follower list drops overnight, it’s not something you tweeted (hopefully…). Instead, Twitter is cleaning out spammers and other “data inconsistencies,” which have artificially inflated follower counts.

Twitter says, “Those with large followings may see significant changes as we correct for spam accounts and data inconsistencies. No legitimate followings should be affected—we’re just cleaning up artifacts in the system.”

Spam continues to be a problem from the nascent microblogging network as false accounts share links to porn or begin following thousands of other accounts with nary a tweet in sight. They also spam Twitter’s trending topics by sticking in popular hashtags into tweets. Twitter has cracked down before, suspending accounts because of “strange activity.”

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