Have established book publishers used your service to create ebook editions?
No, we're still working on those features. I expect major publishers to use XML+XSLT or Adobe InDesign rather than a dedicated service. We're creating our publishing feature with the end-user or small publishers in mind rather than major publishers.
Do you plan to sell ebooks?
We do. I believe that free content and user-generated content in general shouldn't be in a different environment than the rest of ebooks. It makes a lot more sense to have both in the same environment and create an optimal experience for the user.
Emphasis added by me.
This is exciting news.
There's still no inexpensive and easy way for writers to create an eBook file for the ePub format other than the very expensive and expert design tool, Adobe InDesign. This is a speedbump on the road to the liberation of writers via direct publishing.
I had no idea that Feedbooks had a commercial endeavor planned. They have established a mindshare among eBook readers and have been embraced by iPhone and iPod Touch users via the Stanza eBook reader.
They could become a linchpin of direct publishing.