MediaPost offers excerpts from Advertiser Perceptions Inc.'s "Advertiser Optimism Report" which is a by-product of a poll of 200 so-called "media decision makers." It ask them about different media and their intentions regarding ad spending over the next six months. In the most recent wave, online and mobile score well, while most traditional media do not. 

Given the sample size results should be interpreted cautiously. However, directionally, they would seem to be persuasive. As the economy improves so might the outlook for traditional media as well. Online is benefitting partly because it's relatively less expensive. The "optimism" on mobile should be seen as growing interest rather than a reliable indicator actual spending in the next couple quarters. 

Mobile had a generally positive profile in the past couple of waves, but further gains in the most recent data according to MediaPost's compilation:

Source: Advertiser Perceptions (charts MediaPost)