Loving the service, and the Android app is great. A few suggestions would it make even better (sorry if I've just missed these somewhere):

1. Showing exchange rates for 1 BTC, as well as for your total wallet's value
2. The ability to scan a QR code or enter firstbits to look up current balance and other info
3. Protecting the wallet with a PIN on access

Also, the last 2 links under "About" don't work for me (icon by bitboy, and link to the Android Market App Page)

Otherwise amazing stuff. Tip on its way.