Brightkite has updated its iPhone application to version 1.1. New features include:

- Ability to sign up through the app
- Larger radius options on Nearby Stream
- Lots of new settings
- Friend discovery via Address Book
- Invite users using email or phone number
- Ability to join users
- View more information on friend requests
- More control over place snapping
- Have the app open from SMS notification URLs
- Simplified “I am” screen