So, this guy has made a bunch of eBooks based on Stack Exchange content. Making books of SE stuff is okay, but two rules need to be followed:
- License the work under CC-BY-SA as well
This link claims that the books do attribute properly. I find it unlikely that he has properly licensed the books under CC-BY-SA though, given that he's selling them as eBooks. It's possible, but it's dubious (why do people buy them if they can get them for free?)
Could someone investigate. CC-BY-SA is important, it what keeps things open.
Again, I'm fine with him selling books, but not violating creative commons.
(P.S. The other problem I have with it is the covers are really bad.)