Posterous for iOS and Android adds group creation and management
Once a group is created its members can share text, images, videos, music, and other file types -- either by emailing that group's unique address, or, from now on, by using either of the Posterous mobile apps.
Besides creating and viewing groups, the apps allow you to add group members from your mobile contacts and quickly interact with posts from other members of a group.
With this release, Posterous is clearly shifting from its original focus of 'dead-simple blogging via email' and branching out into private sharing territory. Since the groups are set to private by default, it may become an interesting alternative to services such as Facebook's new Groups for easily (and securely) sharing stuff between friends or family members.
Download Posterous for iOS from the App Store
Download Posterous for Android from the Android Market