From the press release:
MediaNet, the leading provider of digital entertainment content, opens today in the United Kingdom the advanced MN Open platform which provides an API and a suite of easy to install Web Components for the digital delivery of music and eBook premium content. Customers can learn more about these products and sign up today at www.mndigital.com. MediaNet also opened its doors to the MN Open platform in Canada today.
This sounds like a good way to start an ebookstore (MediaNet has 200k titles in their catalogue), but I have an alternate suggestion: Kobo. They haven't announced a UK partner, and I bet they want one. Why start your own little store when you can sign up with the only real threat to Amazon?
I'm not kidding, either. Kobo is the only major ebookstore who are trying to expand across borders. Everyone else is hobbling themselves.