Similarly, I have been buying all of Negima as it comes out in paperback here in the US, precisely because I've been reading it online. I don't download it, and I don't archive it, but I do read it, and it whets my appetite for the dead trees tankobons with their little extras. If it weren't for OneManga and some other site where I first started reading it, I probably wouldn't have bothered. So at least in my admittedly anecdotal case, my reading the the illegal translations directly profited the publishing companies and the mangaka.
-- Bob
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Then the horns kicked in...
...and my shoes began to squeak.
-- Bob
---------
Then the horns kicked in...
...and my shoes began to squeak.