I'm more addicted to reading this thread than to buying ebooks!
Actually the thing I used to be addicted to was picking up tons of Kindle freebies - way more than I could read, or even keep track of. Once in a rare while I go back through them and attempt to 'pan for gold', but kinda wish I hadn't built up so many. Most of my ebook reading is from my library, or with Google Survey credits, or other discount methods. Free or cheap is nice (as long as it's something I want to read of course!)