Not surprising to those following our overnight or weekly top 25 cable TV ratings, but MTV's Jersey Shore lead the overall summer cable adults 18-49, and by a wide margin over runners up USA's Burn Notice, Royal Pains and Covert Affairs.
Looking at live viewing plus seven days of DVR playback (L7), the Nielsen Company says the MTV reality show earned a 3.19 rating among 18-49 viewers. USA's "Burn Notice," "Royal Pains" and "Covert Affairs" were in second, third place and fourth place, with 2.37, 2.33, and 2.25 ratings, respectively.
Note that those are Live+7 day ratings including all DVR viewing that Nielsen measures, not the Live+Same Day ratings (which measure DVR viewing until 3am after the airdate) you see almost every where on a regular basis.
That MediaPost article also has more seasonal cable show ratings that we don't normally see (unlike broadcast primetime, where we see seasonal ratings averages for every show).