Thank you all!

I didn't realize about the syncing furthest page read. That means if I pick up my K3 one day, and my K2 another day, I will be screwed. But AT&T is awful at my house (my daughter says their motto should be "No service, anytime"). When I went to the Bahamas last year, 3G didn't work anyway. But I was able to download and read off my computer.
Just wanted to make sure I didn't miss anything, and the syncing across devices was what I was missing!