Beginning with the Thursday ratings below, we're in a period called Nielsen May Sweeps. This year the so-called "Upfronts" week - when the broadcast networks announce and sell to advertisers their lineup for 2013-14 - begins in the last week of May Sweeps. So many shows still airing that are "on the bubble" for a renewal for next year will make it or break it over the next three weeks. CBS, which last night averaged 41% of total viewers in the 8-10 pm competition and 57% in the 8-11 pm competition, has no Thursday night shows in doubt other than "Two and a Half Men" which is really just tying up contracts for actors. What has the advertising community all in a buzz is that the network's CEO Les Moonves has not announced the percentage increase in next year's advertising rates. Because of the dominance of the network, for several years he's announced double digit percentages (over 9%) well ahead of the Upfronts, something no other network has done. Fox's "American Idol" results show again came in #2 in its hour, losing outright in the demo to "Big Bang Theory" and tying with "Two and a Half Men." Last year "Idol" pulled 3.9/12 - 14.45 compared to this year's 2.7/9 - 11.10, a 31% drop in the demo and a 23% drop in total viewers. That could be attributed to a general decline in live broadcast TV viewing in the younger age demo except that "Big Bang Theory" last year pulled 4.0/13 - 12.52 but saw a 5% increase in the demo and a 15% increase in total viewers with this year's 4.2/14 -14.38. It's not that "Idol" won't be renewed, but it does have problems. And "Glee" is running behind "Touch" which is in the Thursday 9 pm slot last year. ABC's "Grey's Anatomy" at 9 pm and "Scandal" at 10 pm both won the demo in their time slots.The network will pick up both these shows, but has to find something to do with Thursday's at 8 pm. NBC has no keepers in the Thursday lineup by any standards other than those used by The CW. But we'll see what they do. The CW. Without knowing what their web site streaming hits and music sales look like, it's nearly impossible to understand the renewal machinations at The CW.