It is just a childish way of telling somebody you disagree with the post or its content. Doesnt belong in Star Citizen or the Spectrum. I think 95% of the backers are adult and should act like adults do, so the Middle-Finger is unnecessary and you could instead use a red X or the Thumb Down emoticon. And if you are really triggered by that post then write your own opinion about it because I am sure that most spectrum users dont like this childish behaviour too.