Yup. There is a Kindle app, a Borders app, a Barnes and Noble Nook app and a Kobo app. The problem is, you have to have market access to download them.

However, because they are free apps, a person can download them on another android device or emulator that does have market access and then back-up the apk files, which can be used by anyone, including being added to the edge.

To save you the trouble, I have done just that for all 4 apps and have uploaded them as a zip package here for anyone who wants them.
http://www.mediafire.com/?4gbd9p5bgrcs9kt

These are current as of 10/28/2010