If you use AppBrain for all of your Android app downloads, then you'll want to update the app as soon as possible: the latest update to version five includes all of the following awesome new features:
- Details page for every app
- Related apps tab
- Ability to share through any sharing app on your phone
- Fast Web Installer now integrated
- Fast Sync Widget
Unfortunately, the integration of the Fast Web Installer probably won't help thanks to the new Market update breaking it, but with plenty of other new features this update is still pretty substantial.