Growth in UV's is good but they haven't released how many...

Growth in UV's is good but they haven't released how many searches people are making, and what proportion are commercial in nature. As I understand it, and if anyone knows in detail, please correct me, Google, Yahoo and Overature measure the proportion of commercial searches so they can say to advertisiers 'look how many are looking to buy something'.

The brutal reality is until they begin selling ads, we won't know if this is a goer.