alt Hacker NewsPoison the corpus.
18 years ago I stood up at a super computing symposium as asked the presenter what would happen if I fed his impressive predictive models garbage data on the sly... they still have no answer for that.
Make up so much crap it's impossible to tell the real you from the nonsense.
“Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?”