About.com Stats Center
Answers to the most common Internet statistics questions.
CyberAtlas
Comprehensive news and information about Internet usage statistics
and demographics.
CyberDialogue Stats
A great source for statistics on demographics of Internet users.
eStats
Excellent source for statistics on Internet usage as well
as predicted growth.
InternetStats.com
A well-organized site collecting Internet statistics information
from around the web.
InfoQuest Surveys and Stats
A good collection of links to sources of Internet statistics and
surveys.
MediaMetrix.com
A leading Internet company that measures web site usage.
Nielsen//NetRatings
A leading Internet company that measures web site usage.
NUA Internet Surveys
Current news articles on Internet stats, categorized by market sectors.
PCData
A leading Internet company that measures web site usage.
Statistics and Demographics
See also the Statistics and Demographics section at webdesign.about.com.
Usage Statistics and Log Analysis
An excellent tutorial on web server logging, usage statistics, and
analyzing web server logs.
Elsewhere on About.com 
