There's a Terry Pratchett HumbleBundle up and, I gotta tell you: stay the hell away from it.
These things are normally truly excellent deals: all you have to do is drop less than the cost of 2 books, struggle with HB's crappy bulk download tool, plug your kindle into a PC to drag them overand you're set for months. The Battletech and Black Library bundles I've done have been just so very, very good.
So this should be a no-brainer, right? Very wrong, apparently.
@rushputin I used to own a Kobo, decent devices and the process of buying a book in the store was usually pretty good
But when I needed to replace it, there were bugger all available in the UK and I bought a Kindle, and damn the process of turning my Kobo books into ePubs was a chew on
Of course then Calibre still had to make a mobi file (ugh) but that was pretty simple