when you check the link that razano gave it to us please make sure to check it untill the end, there is nice information also...
Statistics Are Often Misleading
You cannot - as a web developer - rely only on statistics. Statistics can often be misleading.
Global averages may not always be relevant to your web site. Different sites attract different audiences. Some web sites attract professional developers using professional hardware, while other sites attract hobbyists using old low spec computers.
Also be aware that many statistics may have an incomplete or faulty browser detection. It is quite common by many web-stats report programs, not to detect the newest browsers.
(The statistics above are extracted from W3Schools' log-files, but we are also monitoring other sources around the Internet to assure the quality of these figures).
