It’s a twitaway: http://twitaway.aws.sitepoint.com/
Sitepoint is giving away a free full pdf copy of their book “The Art & Science Of CSS”
On the twitaway page, it states that you can either follow Sitepoint on Twitter or give them your email address to download the book. I followed them on Twitter, but wasn’t sure how the download exactly worked, so I just gave them my email address to get the download.
UPDATE: Okay, I found out how it works on Twitter. They send you the link in a direct mail from Twitter. Cool.
If you go the email route, be aware that they do like to haunt you a little bit afterward, but it’s not too bad. I don’t mind, especially when they are giving away a free book.
But I did receive my download link by email, and it took seconds to download…It looks like an interesting book. Now to find time to actually read it.