Happy to see a successor for the acquihired/killed Readmill. Readmill offered a ton of free (public domain) books, right after signup, allowing new users to try the app’s full reading/highlighting/sharing/commenting experience, before having them purchase books just to get a grasp of, say, the basic typographic look and feel. It drew me in, I bought some titles, and own the epub files still, even after Readmill went to the deadpool. What’s Glose’s offering as regards long-term preservation of my electronic library investment?