Author Information on Amazon

If you're selling your book on Amazon then creating and updating your Author Central is essential. When a book catches a reader's fancy, they usually want to find out more about the author, like other books. With one click on the author name, they will be taken to your Author Central page.
Author Central has the following information:

• Author Bio
• List author's books
• Author photo
• Videos (can be promotional videos)
• Links to your blog and twitter. These are feed-updated frequently to pull in your latest posts.

Amazon has developed About The Author, which is a new feature for Kindle Paperwhite and Kindle Fire HD to help those readers find out more about you.
Update your Author Central, it's a handy promotional tool.