Web Statistics - internet market research - web market share - web traffic analysis - web ranking

http://www.google.com/search?q=%2Baudiweb+%2BcomScore+%2Bcompete+%2Balexa+%2Bnielsen+%2Bhitwise+%2Bquantcast&hl=en&safe=off&client=firefox-a&rls=org.mozilla:en-US:official&hs=ki7&tbo=1&num=100&newwindow=1&tbs=sts:1&filter=0

http://en.wikipedia.org/wiki/ComScore

http://en.wikipedia.org/wiki/Adgooroo

http://www.trellian.com/

http://en.wikipedia.org/wiki/Hitwise

http://en.wikipedia.org/wiki/Alexa_(Internet)

http://en.wikipedia.org/wiki/Compete.com

http://en.wikipedia.org/wiki/Netcraft

http://en.wikipedia.org/wiki/Quantcast

http://www.spyfu.com/

http://www.gemius.com/

http://en.wikipedia.org/wiki/Nielsen_Ratings