17. The computing system as recited in claim 16 , the acts further comprising increasing a popularity ranking of the at least one different video in the media domain.
16. The computing system as recited in claim 15 , the acts further comprising: generating an updated topic space based on a plurality of additional microblog entries that are received via the social stream domain; receiving a second microblog entry from the social stream domain that is associated with the topic; determining, based on the updated topic space, that at least one different video in the media domain is associated with the topic; and identifying the at least one different video as a recommended video based on the second microblog entry.