12. The method of claim 11 , wherein determining if the first metadata item is relevant to the content object comprises: generating, using the computing device, a content vector based upon the content object; generating, using the computing device, a profile vector based upon the first metadata item; and performing, using the computing device, a similarity operation to compare the content vector to the profile vector.
13. The method of claim 12 , wherein the content vector comprises numeric weight values based upon the content object, and the profile vector comprises numeric weight values based upon the first metadata item.