Quicksilver highly blogged for a reason

So I know it's on everyone's blog everywhere now, however I just love Quicksilver. It is by far one of the best apps ever. How do I know this? Cause I was helping a friend earlier today and he didn't have it. It was a bit of a oddity to say the least. Ctrl+Space, why isn't it working? Anyway I just have to say well done Black Tree well done.

Favorite QS links:
Guide
The Apple Blog