Friday Ratings

Marc Berman's summary:
-Winners: Shark Tank (ABC), CSI: NY (CBS), Blue Bloods (CBS)
-Not Positive: Primetime: What Would You Do? (ABC), Supernatural (CW)
-Losers: Who Do You Think You Are? (NBC), Nikita (CW), Fringe (Fox)
-Total Viewers: CBS: 10.31 million, NBC: 5.32, ABC: 5.23, Fox: 3.29, CW: 1.65
-Adults 18-49: CBS: 1.6 rating/5 share, ABC: 1.5/ 5, NBC: 1.4/ 4, Fox: 1.3/ 4, CW: 0.6/ 2

Network numbers from TV By the Numbers.