It's pretty easy to see why some groups don't buy the summer book. I'd hate to have to plan a long-term strategy on some of these numbers, especially the younger demos. That said, however, the older numbers aren't too far off track from the rest of the year.
Agreed on the five book trends. That many surveys in a row with consistent movement up or down shows a long term pattern. If WIVK hasn't started over the cliff, it's pretty close to the edge. There's erosion over the last two books in WIVK's PM drive like we haven't seen before.