On-line marketing spend - web 1.0 vs web 2.0
 

Are you aware of any research on on-line marketing spend, web 1.0 vs web 2.0? If so, please share it with us.

For clarity, web 1.0 includes sites such as search engines (Google, Yahoo, etc), specialist (Moneysupermarket) and generic websites. Web 2.0 includes user generated content sites such as Facebook, LinkedIn, edocr, etc.