No matter how carefully you design and structure your site, visitors will sometimes request missing, moved, or non-existent pages. A well tempered 404 error page will plunge these visitors back into the flow of your site. Ian Lloyd shares strategies for crafting the perfect 404. [A List Apart] interesting read! i need this. i also have to block access to a file on the sevrer, gwebcache.php, which i deleted ages ago but still gets about 5000+ hits a day!