Yeah - they tried to spam my blog as well...
I honestly don't think that these guys are going to last:
1) They infringed on two trademarks at the same time: "Kindle" and "OS X". Want to be who will come after them first Amazon or Apple?
2) They are violating Kindle EULA and charging money for it. Another reason for Amazon to come after them.
Would be nice to move this thread to main Kindle forum so that more people would be aware of this scam.