Magazine and newspaper publishers are about to get a larger piece of the Kindle pie -- 70 percent, to be exact. That's what Amazon's now offering, in an effort that's clearly aimed to attract more periodicals to the service. Only catch is, all versions of the periodical have to work for all version of Kindle, in all geographical regions where the publishers has the rights to distribute -- a small price to pay, especially since it keeps the customer base pretty wide open. Interested parties, you probably already know where to look.