Both Google and Yahoo fall short in a key area of homepage search usability: direct to vertical search from the homepage.
Vertical search is key to both Google and Yahoo for their future growth. Vertical search users may be considered more “quailified” leads than general search users and ads on vertical SERPs, therefore, may command higher rates.
Read more from ZDNet’s Digital Micro-Markets Blog
*Help build a knowledgebase about “Vertical Search” at the Whats New Media Wiki