SEO Bulletin

http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220050149576%22.PGNR.&OS=DN/20050149576&RS=DN/20050149576

Here is a list of the Server Response Codes and what they mean.
HTTP/1.1: Status Code Definitions

Find out about programs running in the backround with Task List Programs

If you’re on an Apache Server, with Mod_rewrite installed, you can create custom error messages for server errors.

Action Choices: [See Apache Manual]
Display Text
Redirect to External URL
Redirect to Local URL

Example lines of code for .htaccess file:
ErrorDocument 403 “Goodbye.
ErrorDocument 404 http://www.otherdomain.com/
ErrorDocument 404 /custom404.htm

Here is a Tool and Tutorial for building Favicons.