Saints Row: The Third has announced community sharing tool for your customized characters. Now your friends can use your personally crafted persona in their own games. The Initiation Station will offer players a chance to share each other's avatars:
...the days of copying down over 150 customization values just to share your creativity with others is no more! The Initiation Station for Saints Row: The Third will allow you to create your own custom character in-game, upload it right here to the community site, and then have other members download your character straight to their system for use in their own game!
You can access the Initiation Station one week early if you preorder another co-op title, Red Faction: Armageddon. This will allow you to create your own custom characters a week before Saints Row The Third is released. The Initiation Station is available for all three platforms: the Xbox 360, PlayStation 3, and PC. Saints Row The Third should be out by the end of the year. It will support 2 player online co-op.
Source: Saintsrow.com