How are redundant tags handled?  For example, there is currently [serveroom][1], [server-room][2], and [datacenter][3] which all mean the same thing.


  [1]: http://serverfault.com/questions/tagged/serverroom
  [2]: http://serverfault.com/questions/tagged/server-room
  [3]: http://serverfault.com/questions/tagged/datacenter