• usability10
• Stability8
• Installation9
• Functionality10
• Appearance10

The most current version of Quicksilver can always be found at http://github.com/tiennou/blacktree-alchemy/downloads The current version at the time of writing is b58. It works quite nicely on Snow Leopard. A few of the less popular plugins still need to be updated, but otherwise all is well. Some users have reported on the Quicksilver discussion group that certain software download websites have been trying to charge for access to the latest versions of Quicksilver. Please know that this is a rip-off; anyone can get access to the latest version for free by going to the address posted above. P.S. I am not a Quicksilver developer, but I am an administrator on the Quicksilver discussion group, which can be found at http://groups.google.com/group/blacktree-quicksilver