Is there any bad news about this giveaway? Well yes: people are still pirating it. The developers claim that 25% of the bundle downloads are "pirated" -- people who didn't pay anything at all for it. They didn't secure the link, authenticate the downloads, or protect the game with DRM (and they didn't ask users to pay any more than one cent for it), and people are still just rolling up and downloading the games for free.
Unfortunately, that doesn't solve any arguments -- those for DRM would say that real security would prevent that, and those against DRM would claim that it won't. At any rate, those are five great indie games that are worth your money -- if you downloaded them for free, put a few bucks in the pot.