We’ve discussed e-book readers and electronic paper several times on this blog. Amazon.com announced today the release of Kindle, its own e-book reader, or wireless portable reading device, as it calls it. It retails for US $399 and thus far ships only in the US and is not available on amazon.ca or amazon.co.uk. It is a standalone product, in that content does not need to be loaded via a computer or other external device; a purchased book is delivered wirelessly to the reader in about a minute, according to Amazon. It is said to hold 200 titles and weigh about 10 ounces. Amazon also indicates that 88,000 titles are available for Kindle, new releases and best sellers for about $10. More product information is available on the Amazon.com Kindle product page.