This was going to be the second in the series, but since the free ebook is only available for the next couple days I decided to discuss it first.
Who: University of Chicago Press
What: a free ebook every month (this month it's an autobiography, Nice Guys Finish Last by Leo Durocher)
What's wrong with it: The free ebooks are encumbered by Adobe DE DRM, and require Adobe DE. While this may be annoying, it's not the problem. The problem here is that the download process is broken, and has been broken for every free ebook for the last 3 months. At a minimum, I usually have to try to download the ebook several times before it works. Why is this bad, do you ask? Simple. They've made it easier and more pleasant to go find a pirated copy than to get a free one legally. How does that promote their sales, exactly?