Keep in mind that the US is presumably in recession. (Though frankly, I haven't seen any particular drop in the Dynamic Languages Barometer. Good news for us hackers, I guess.)

Wrt TIOBE, I think this pretty much says all that needs saying.

Tho I suppose by properly torturing the statistics, one can state that a language's popularity is inversely proportional to the number of available jobs for the language (assuming we ignore languages that start with "Java").