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needing several plugins developed for
an add on to the oxwall photo plugin that allows tagging users like on facebook
a plugin that adds level up function for our users
a module that allows users to send each other cool power up items to earn more points to level up like fubar.com
add video chats to user options where one user can broadcast and others can watch (possibly do this with opentok)
make it possible for user with a certain access level to accept credits from other users and of course allow all users to send other users credits
you can obtain a script and developer details from oxwall.org