I would guess a combination of unnecessary profanity and lack of informational content. Censuring “Me too!” posts is a long-standing and entrenched norm of internet culture.
At any rate, I expect that a similarly phrased post expressing disagreement would likely be voted down as well, possibly even more strongly.
I hope this is being voted down because people don’t like profanity and not because this is a public expression of assent in a rationalist community.
I would guess a combination of unnecessary profanity and lack of informational content. Censuring “Me too!” posts is a long-standing and entrenched norm of internet culture.
At any rate, I expect that a similarly phrased post expressing disagreement would likely be voted down as well, possibly even more strongly.
See http://lesswrong.com/lw/3h/why_our_kind_cant_cooperate/2ua