This allows you to install stuff from the market lightning fast. Just log into appbrain and start browsing apps. When you want to install click on install and move on to more apps. Once you have your que built up of apps you want installed. Just download the appbrain app from the android market. Log in and sync up.. Then the apps you had in your que will one by one take you to the direct link on the android market to allow you to install the application. This saves a ton of time and is smoking fast. Another nice feature is it keeps a list of all the apps that are installed on your phone. This is nice if you ever do a clean wipe of your phone you still have a list of apps that you had installed. Makes reinstalling a ton easier and faster.