I just found out about AppViz, which I immediately purchased.

This nice little app will fetch your daily stats from Apple's clunky web interface and build nice graphs for pretty much everything. This is definitely better than the solution I hacked together using PHP to get a vague idea of how my sales were going and that required me to manually login and download stats from Apple's web interface.

But most of all this application downloads reviews from every appstore in the world ! This is what I have been looking for months and begging Apple about (with suprisingly no response). As a developer this allows me to stay up to date with comments from users all over the world.

It has some room for improvement (like exporting as a website for non mac users, and automating updates) but this is definitely a great start. The author seems to be a really nice guy (just reading his blog right now) so the effort is definitely worth supporting. Buy this app!

Update: Concerning automation, here's someone offering a solution with automator.