In general file sizes are tiny, out of all the books I've had almost all have been less then a meg each. One exception was one that was heavy on illustrations, and the other was the first five game of thrones books in one file, thousands of pages at 11.2 megs.
That's a pretty lame policy, ours allows five checked out plus five on hold.
I never said they were. And I don't know how many libraries haven't started offering ebooks, if someone has one that doesn't they can certainly do what they can to encourage them to consider it.
Sorry, I thought you were actually asking those questions, not being rhetorical.
Are there any stats on how many ebook titles the various libraries have? And that 600k number from Amazon ignores which books they are and what quality, if a large portion is self published stuff that nobody really wants to read it's kind of a useless number.