I am attempting to gather data in regards to SEO/SEM and IYP
advertising for the insurance industry.  I have found a lot of
pertinent information, such as the top SEO sites and the top IYP sites
from comScore.  The majority of what I am unable to find is the amount
of searches that are done on SEO's and IYP's overall, as well as a
breakdown of the amount of searches that are done for insurance
specifically.  As a further breakdown, I would like to know the
consumer make-up for the related searches and the expected ROI for
both SEO and IYP advertisers as a whole and the expected ROI for the
insurance advertiser.  To summarize, can you find me the number of
hits that the top five IYP sites (Yahoo.com, SuperPages.com,
SmartPages.com, Switchboard.com and YellowPages.com) receive annually
as a whole and for the insurance industry, and the ROI as a whole and
for the the insurance industry that an advertiser may expect to
receive?  In addition, can you find me the number of hits that the top
five SEO sites (Google.com, Yahoo.com, MSN.com, AOL and Ask.com)
receive annually as a whole and the amount of searches done for
insurance, and the ROI as a whole and specifically for the insurance
industry that an advertiser may expect to receive?  Any additional
information beyond these questions will be greatly appreciated and
please include the source of your information to prove its
credibility!  Thank
you!