Inside a Twitter Robot Factory

One day earlier this month, Jim Vidmar bought 1,000 fake Twitter accounts for $58 from an online vendor in Pakistan.

He then programmed the accounts to “follow” the Twitter account of rapper Dave Murrell, who calls himself Fyrare and pays Mr. Vidmar to boost his standing on the social network. Mr. Vidmar’s fake accounts also rebroadcast Mr. Murrell’s tweets, amplifying his Twitter voice.