In the time I have been to webmasterworld I have learned a lot of stuff, but I feel that the more I seem to learn the more I realize how little I know. So, here is most of the things I have covered. If anybody can think of any more I would love to hear about them.
W3C Tips on good websites,
<title>: the most important element of a quality Web page - Done
Don't use "click here" as link text - Done
Use standard redirects: don't break the back button! - Done
Use h1 for top-level heading - Done
Use the alt attribute - Done
Don't forget to add a doctype - Done
Use <link>s in your document Done
If You Pick One Color, Pick Them All - Done
Care With Font Size - Done
Use international date format - Not needed
GIF or PNG? - GIF
Use headings to structure your document - Done
Choose URIs wisely - Done
Managing URIs - Done
Beyond Validation - Done
Make readable URIs - Done Beyond W3C tips, I have,
Added gzip compression
All my pages load in under 6 seconds on 56k
Use multiple classes for my css i.e. <div class="b i u">
Still use tables for setup but fill them with divs
Test pages with IE 5.0/5.5/6, Opera 7.x, Moz 1.6, NN 7, lynx
All pages validate for both css and xhtml 1.1
Setup P3P
The javascript I use is unnoticed by those with it turned off
Favicon is 16x16x256 (for load time)
Robots file is done
Indexes are turned off
Error documents are set
All characters are standard i.e. © or »