http://www.reddit.com/r/Bitcoin/comments/2gv44m/darkcoin_i_just_solved_one_of_the_largest/
And it's hard to blame them - the fact is a majority of altcoins are essentially a scam. Darkcoin is one of a few if not the only that in my mind is not a scam or pump and dump or shitcoin or what have you.
So I'm not quite sure how to change perception enough to even get people to read the paper before criticizing it - but as a community we probably should think/talk about it - because that will be our next growth hurdle: getting mainstream cryptocurrency attention as something more than a shitcoin.