Will AppBrain distribute applications?

No, all applications will come from the standard Android market. This means that the synching process on the phone consists of a number of successive redirects to the market application. However, as all selection has been done behind the desktop already, each installation is just a single tap on the "Install" button in the market. Similarly, each deinstall will be a single tap on the Remove button.

Note that this means AppBrain can NOT be used as a replacement for the market. If you have a tablet or other type of device that doesn't have the Google Android market, AppBrain will not be of much use, as you can not get the APKs for the apps.