I don't think feedbooks is going this direction.
They're generating the SONY Reader format from text source using LATEX and what not...
I also don't think that a forum is the best way to do it, because it will always promote the latest and not the greatest
I have a lot of diskspace on my webhosting service.
If someone would point me to the right Drupal module or similar php stuff to use I'd be glad to set up something...