I’ve never heard of these guys before, but it looks like a self-publishing site where you can upload an EPUB file and they’ll concert it to Mobi and do some other setting-up. They take 20 percent for their pains, and you keep the rest.
As for the bundle, they’re calling it “The Zeitgeisty Bundle,” and promising books about “startups, geekdom, and the strange side of the Internet.”
The included books are:
If you pay more than $10, you can unlock four bonus books too:
I don’t know much about any of these books, but they are DRM-free, so if ‘zeitgeisty’ stuff is your thing, enjoy!