Well, I'm fresh from OneManga's impending doom, and for now this site shall be my crutch. BUT I will say this:
Would I have bought the manga I had bought without having first sampled them via the scanlations? Not a chance in hell. And now they're going to make it more difficult for themselves to make money because people won't have the ability to sample a series (certain publisher sites offer "chapter previews" but these pale in comparison to actual releases when you want to get a feel for the story or its characters).
"Step off, McFlower Power, you've had your chance to speak." - Tony DiNozzo, from NCIS