1. CaffeineMark 3.0,
http://www.benchmarkhq.ru/cm30/
2. Layouts,
http://developer.android.com/guide/topics/ui/declaring-layout.html
3. Mobile Payment Libraries,
https://www.x.com/developers/paypal/products/mobile-payment-libraries
4. Rogue phishing app smuggled onto Android Marketplace,
http://www.theregister.co.uk/2010/01/11/android_phishing_app/
5. UI Overview,
http://developer.android.com/guide/topics/ui/overview.html