I've been made the maintainer of the Amazon and Amazon Store modules for Drupal.
My interest in these modules came about recently due to a new project I'm working on for my wife and myself, upon examination I found that both had been neglected for quite some time. This is understandable, when you're not currently using a module, it has a tendency to fall off your radar as more important issues occupy your development time.
Given my desire to use these modules on my upcoming site, and wanting them to work reliably, I agreed to take on maintainership of them. Currently I only plan on making them functional again. I've already resolved most of the long outstanding bugs from the issue queues and released new versions on Oct. 31, 2012. Long term, I could see significant rewrites, but I'm not going to commit to any of that for the time being as I too have precious little time available.
At the very least, the 7.x releases are once again stable and usable, and that has to be a good thing.
Big thanks to Randy Fay for all of his work on these modules, and trusting me to take them over.