Don’t share contact information the boring way, get bumping. The Bump app for Android allows you to exchange personal contact information without actually typing in the information.

Here’s how Bump works, launch the Bump app on both phones, select the information you want to share and bump phones to share contact info.
Still don’t understand? Check out the video demo:
Search for “Bump” at the Android Market from your Nexus One phone to download the app for free.
Bump QR Code:
