Members choose the sites

I'd love to see the new plugin or an add on to 'User Synchronization', which lets users choose the site they want to join. So if you do have multiple wordpress / buddypress sites your members can see all your networks, and they can choose to sign up for them too just by clicking one button. AMAZING!

Maybe even if the wordpress / buddypress sites are not run by the same people, they could add the plugin to each others sites to help promote each others wordpress / buddypress networks.

If you all get behind this concept the nice people at wpmu dev will look into this.