Anyone know what sites / resources are best for finding semi-recent marketing statistics to provide to our business clients?
I'm looking for stuff like:
* Current stats on the effectiveness of traditional advertising (TV, radio, newspaper etc.)
* Trends in audience responses / engagement with traditional advertising
* Stats that show how much more effective marketing via social media (or the Internet in general is) etc.
Not having much luck on Google (finding sources that I'd want to reference as a source...not random Squidoo pages with no citations)
Anyone know of such resources?