I think history will show that the new breed of subscription ebook services like Scribd will grow the number of readers who are enjoying and consuming ebooks. (goodlifeguide.com)
Kobo isn't new to the ereader and ebook market, but it is new to the world of subscription ebook services. (slashgear.com)
With subscription ebook services, readers surf books, as if visiting a massive online library, and once they hit a percentage threshold of pages read for an individual title, it triggers a full sale. (rogerpacker.com)