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Project is to link groups of people via a social network site.
Site should have the usual login/lost password functions etc.. and also basic social networking features like adding their photo. Users should be able to select their groups from either ajax dependent drop down lists or an ajax forward lookup on the db table db should be MSSQL or MySQL.
Users will see other members of their groups and they can also be a member of many groups. From the users profile page they should see their list of groups and be able to drill down into them, also usual social networking home functions like what they are doing now and private messaging would be an advantage. Looking for .net or php ideally based on an open framework like Joomala DotNetNuke or Drupal (or other).