Grant Barrett's book The Official Dictionary of Unofficial English has been bootlegged. And so he's playing along and providing a link to a free PDF since the copyright is his.
Well, not just playing along. He writes:
But the main point here is that I'd like to draw people to my site for the free download, not to some shady place on the Internet.
Head on over.
No fees, registrations, logins, passwords, ad-clicking, or hoop-jumping required.
It's realistic and sensible.