Update: A few users have reported the App Store becoming unresponsive when attempting to install apps. I was able to install the Twitter app without issue, as have a few other users. Feel free to report any issues in the comments below.
Hackintosh users rejoice! 10.6.6 was released for Snow Leopard users earlier today (Kernel 10.6.0), adding the Mac App Store and a few other minor bug fixes. The update is extremely simple to install and does not require any additional work to restore system stability. That means just install the 10.6.6 update and reboot! Wi-Fi will continue to work, audio with AppleHDA.kext will be unaffected, Bluetooth will be untouched, USB will be running at 2.0 speeds, and sleep will continue to function with the pmVersion=21 boot flag (also used in 10.6.5).
Only users that require the legacy kernel:
10.6.6 (10.6.0 kernel) legacy kernel- To be installed after the 10.6.6 update but BEFORE rebooting