Jack is a monster; a psychotic Twitter stalker who likes Prokofiev and liver. Jack is a fictional character, if he follows you, you might become part of his ghastly tale.
"rep.licants.org is a web service allowing users to install an artificial intelligence (bot) on their Facebook and/or Twitter account. From keywords, content analysis and activity analysis, the bot attempts to simulate the activity of the user, to improve it by feeding his account and to create new contacts with other users."