Search Analytics (sûrch ān'ə-lĭt'ĭks)

Definition

"A series of reports showing what visitors are searching for on a web site or database. The reports will include most frequently searched for terms, search terms that produce no results, search terms that produce too many results, and the general trends of search, such as which search terms are gaining in popularity. This level of information is often more informative than simple click tracking."
www.ideaeng.com/pub/entsrch/glossary.html

Internet Search Analytics Providers

The following vendors are commonly known as web analytics providers and provide a variety of analytical reports.  Below are vendors that provide features specifically for search analysis purposes.

Compete Search Analytics 
http://searchanalytics.compete.com/site_referrals/
Compete's Search Analytics is the starting point of search marketing campaigns that build brand awareness, drive traffic and increase sales.
 - Find the gaps in competitors SEO and SEM strategies
 - See who you are competing with on specific keywords and phrases
 - Benchmark your search marketing performance to the competition
 - Generate robust keyword lists from data on 19 million terms and 3 million sites

Enquisite Search Analytics
http://www.enquisite.com/
Enquisite Pro is a search engine referral analysis suite that provides in-depth information about web site visitors referred by search engines. Used by search engine optimization and pay-per-click marketing specialists, Enquisite Pro delivers a wide array of search referral data with metrics ranging from a ‘big picture’ overview to extremely granular information about local search markets

Webtrends Search Rank Reporting http://www.webtrends.com/Products/WebTrends7/CompareEditions/SearchRankReporting.aspx 

List of Web Site Analytics Vendors
http://www.terrylund.com/vendorListing.shtml

Site Search Analytics Providers

Site Search Analytics Providers analyze the onsite searching of your web site.  They often use log analysis to gain insight on how people are searching the site which in turn can be used to enhance website usability and integrated into behaviorial targeting techniques.

Google Analytics
http://www.google.com/analytics/
"How many searches occur on your site and do people find what they are looking for? This overview allows you to drill down and understand the effectiveness of search on your site."

Internal Site Search Analytics Resources
Kick Butt With Internal Site Search Analytics