Consider the following ran against a copy of the php.net home page: -rw-rw-r-- 1 john john 27066 Jan 3 04:11 php.html -rw-rw-r-- 1 john john 26193 Jan 3 04:11 php_tidy.html ]]> That might not seem like a lot, but when you serve 100,000 hits a day you save *87.3 megabytes a day* in bandwidth.