I bought my first ever Nook last Friday, the 2nd generation Simple Touch. I'm in love with the thing and I'm curious as to where others who own Nooks get their e-books, especially free ones. I know, I'm bad--I should be paying for books, and I will but right now 'free' is my favorite word. So how about it? Any other Nook owners here and any favorite free e-book websites you can recommend?