The Bowker data shows traditional books down last year competing for same shelf space in traditional shelves but the big increase in short-run and e-books means more overall competition. Interesting time for the publishing industry, perhaps more important than ever to build a platform. Thanks for sharing the tips.

Two other responses I've heard: hate using computers/gadgets and prefer oral communication. Like most anything, benefits from Twitter come after taking an initial period of exploration. I've found interesting discussions and sharing including #followreader and #fridayreads. Something I didn't expect to find was a mini-magazine like @tweetthemeat or @Nanoism. Your post on managing Twitter followers really helps the new users from becoming overwhelmed.