Downloaded the demo.
So far it works fine, I really like the organized and stored shots in the browser without fiddling, renaming and organizing on your desktop all the time.
But I miss some feature that I found to be very useful in e. g. SnapNDrag. The option to make either full screen shots or window shots.
Think I will purchase it then...
Otherwise good work.

Stellarium 0.10.4 on MacBook Pro1,2 2,16 Intel Core duo 2GB Ram, 10.6.2

Wow, I am impressed and that does not come easy!
Starts quickly, all functions work swiftly and without "hesitation", very nice animation, especially the planet magnification and animated orbits. Like to hunt for the "cruising satellites" with my binoculars. Very very fast as far as I can tell... I love the menu look :-) Huge language support, many interesting and useful preferences. Although I couldn't get the compass bearing plug-in to work, not sure if it´s me ;-)
For my needs as a non professional sky-observer in Northern Norway a great application. Can´t believe it´s free... Does really meet the famous "Mac spirit".
I might miss one additional useful function: Northern Lights indicator plug-in!?

Big thanks to the people behind the project! Definitely 5 stars!

They took it off-line because it was was buggy!

I managed to download the software:
No mobile phone symbols were shown in the list afterwards, only usual symbols, had to go manually through all contacts. Found out that multiple mobile numbers were ignored, got "lost" :-(. And worse: it does not accept the iSync preferences concerning iCal, I can not select/deselect certain calendars. Now my phone is filled with thousands of entries with name-days, tidal times and other stuff I usually only show/activate on demand. Find out more annoyances almost every day. Hope the fix it soon! :-(