By Steven Sands
TUAW's Erica Sadun and I are ebook publishers. Late last year, we started up an ebook publishing company -- Sand Dune Books -- and were fortunate to hit a publishing home run right off the bat with our book "Talking to Siri." Since we're familiar with the tools used to create documents for publishing on both the Amazon Kindle bookstore and iBookstore, we were both curious to see what Apple was going to announce on Thursday. The free creation tool, iBooks Author, wasn't a surprise to us, and now that I've had an opportunity to work with the app I thought I'd pass along my thoughts on how it works and why it may not be the publishing tool for everyone.