Just last week I found a research paper I published while at Cornell on Scribd -- no attribution at all, no permissions, etc. It's a paper that in normal circulation costs $50 to purchase (and has been purchased a few thousand times -- whether $50 is reasonable or not is a discussion for another thread, of course).

I considered letting my editor know about it to see if she wanted me to request it be taken down, but then I figured I'd rather more people see the paper anyway so left it alone.