I find them very interesting. Especially the downward trends.
The gap between strongly approve and strongly disapprove is widening...and in the right direction. I wonder if this was done before the full impact of the terrorist swap fiasco.
As usual, the key is on either end. "Strongly Disapprove" is going up, which is good. More important, though, "Strongly Approve" is going down.
While the middle columns will likely jump around a little, once a person is in the "Strongly xxxxx" column, they're difficult to move. That's why the "Strongly Approve" downward trend is so critical. Shows that BO really stepped in it.