link http://news.bbc.co.uk/1/hi/business/8235193.stm

What's that got to do with ebooks?

Well, HMV owns Waterstones in the UK and to quote the articles

"7digital will now become HMV's supplier for all of its digital operations, including a new e-books website for its Waterstone's brand."
I use 7 digital a fair bit for finding & downloading music, and it's easy and straightforward to use. Here's hoping the new ebooks site is as good.