To be honest its a long story and you should start here and get yourself up to speed, everything you need to know is here in these threads and links.
IT'S FINALLY READY: THE OPERATION SPORTS COMMUNITY ROSTER: OFFSEASON/DRAFT EDITION =)
You should be able to find everything you need as far as what they are and what they do in association with the Community rosters,the OSCD stands for "Operation Sports Community Rosters" or simply "Operation Sports Community" which is where you are so welcome to "OS...Da Spot"!
Holla Back ya'll
Rickster101 aka "Jack Bauer"