It's when some no-name YouTuber gets popular through being on DramaAlert, or being shown on one of LeafyisHere's or Pyrocynical's videos.
Person 1: Did you hear that LtCorbis was featured on LeafyisHere?
Person 2: Must be the Keemstar Effect again, she's got 100k subscribers now.
Person 2: Must be the Keemstar Effect again, she's got 100k subscribers now.
by FoxofGrey March 15, 2016
The Keemstar Effect is the effect when 1 or more people spread an exaggerated rumor causing their live/private live to be ruined.
by blind lemon jefferson June 20, 2016