Ekiden and shintaku we're the only ones that scared me.
Companies like kaleido using private nodes scared me but I don't consider that fud since I was the first person I saw write about it after kaleido and Amazon's announcement and I wasn't trying to fud but was actually worried.
The rumors of sergey taking the money and backpakcing and asia scared me pretty good almost sold 100k Also the rumors that he spent all the money on bigmacs.