AnimeKon Writes; "Looks like MangaHelpers is the first scanlation-aggregator website to willingly comply with the threatening (though still informal) requests made by the recently formed multi-national manga anti-piracy coalition, as it agrees to remove all"...
These guys have apparently been working on their Open Manga project for quite some time, though I'd imagine all the recent noise has caused them to push that forward somewhat. All in all, it sounds very much like the Crunchyroll like mode, just applied to manga. Good luck to them, I say, and here's hoping they can achieve their goals.
Destroy mangatraders and Stopmazo, and manga will recover for sure.