If the DRM (digital rights management) on your Kindle ebooks bothers you, there’s a way to get rid of it using popular ebook management software Calibre.
The Digital Reader covers the process in a recent blog post, so head on over and check it out if that sounds like something you’d like to do.
DRM is used by Amazon and other digital product publishers/distributors to help limit distribution (i.e., illegal distribution) of the product after it’s sold. In other words, it’s supposed to keep people from pirating the product, but it often is just a nuisance to the people who have legitimately paid for the product. Not all Kindle books have DRM; authors can choose to activate it or not.