Fake Twitter accounts need some information — an image to use as an avatar, perhaps some bio content, maybe even some tweets. For merchants that need to create an inventory of 20,000 accounts quickly, this simply cannot be done manually
via Inside the real economy behind fake Twitter accounts.
By now, though, even this process has been open sourced. First-page results on a Google search for “program to make fake twitter accounts” return this forum on Freelancer.com, titled “Software create fake twitter users jobs.” There, several development projects are posted for bidding that request a program that grabs information from Twitter users’ accounts.