Making the rounds electronically now (we missed it when posted a week ago), Google eBooks said their apps for iOS, Android and Chrome “have exceeded 2.5 million” installs since December. In contrast, Kobo said in early May they were “close to 4 million users” with adoption accelerating. (They went from 2 million users to 3 million in somewhere between 60 and 90 days.) Google There are varying degrees of consternation online based on whether or not people were paying attention previously, but as announced, Borders is transitioning their branded ebook line–which was already powered by Kobo–over to the Kobo brand. […]