Are you sure it's ebooks?
This page makes it look like a way to join multiple libraries with a single online account - and automatic Facebook logging (ugh!). The example seems to be a physical book. Though I suppose if the participating libraries offer ebooks then maybe they'll be part of this scheme too?
Actually the more I look at it, the more it looks like it might be a way for people with collections of books to set themselves up as a "library" and offering those books for lending through this site.
Needs someone who doesn't rely on Google translate to look at it though.