My reading horizons have definitely widened - in part because I've been looking all over the Internet for (free) reading material to put on the PRS-505. One great discovery (you probably all know about it) is the Internet Archive at
http://www.archive.org/index.php, which has tons of books and other stuff in a variety of formats. I also get lots of periodicals, blogs, white papers, classic literature, et cetera, of far greater variety than my previous paper reading.