karma farmer

(Internet slang, Slashdot, Reddit) Someone excessively dedicated to gaining a score assigned to a user or post on a discussion forum, indicating popularity or perceived value, often by disagreeable methods such as reposting content or creating fake stories.

(Internet slang, Slashdot, Reddit) To act as a karma whore.

(internet slang) A person who encourages and publicizes melodramatic behavior on the Internet.

(Internet slang) To attempt to raise one's popularity or profile online by gaining as many likes or shares as possible.

(internet slang, Twitch-speak, derogatory) One who clip farms.