Actually, MangaHelpers is doing something I find interesting with regards to online scans. They're trying to work with major publishing houses to create a platform that would allow artists/publishers to put content online and still earn a profit. It sounds like they'll have different payment models, which might include a no-pay plan where you just get the bare-bones in terms of content. If you want the specifics, though, you'll have to check this blog, since I don't remember off the top of my head what they said exactly.
OpenManga Official Blog