Link Master --> website performance test

http://analyze.websiteoptimization.com/wso

http://www.web-inspect.com/speed_test.php

http://www.softwareqatest.com/qatweb1.html

http://newtipsandtricks.com/tag/enable-leverage-browser-cache

http://www.askapache.com/htaccess/apache-speed-cache-control.html

http://www.thewebdevelopmentblog.com/2008/10/tip-speed-up-your-websites-using-gzip-and-merging-files/

http://viralpatel.net/blogs/2009/02/compress-php-css-js-javascript-optimize-website-performance.html

http://stackoverflow.com/questions/4056869/how-to-use-gzip-compression-in-apache-for-html-css-and-js-files

http://betterexplained.com/articles/how-to-optimize-your-site-with-gzip-compression/