I've started up a Wiki to cover all aspects of Q3.
One area I think it could really help in is giving content creators somewhere to present their work, including work in progress. The wiki system gives just about anyone the power to create and maintain their own pages. Those pages can be kept static but are even better as fluid, changing over time to reflect things like beta released, new download mirrors and reviews.
I think it would be great if you would take a look, and perhaps set up a pages for your levels. I've set up an example page here showcasing one of my own levels:
http://fps-media.com/q3wiki/index.php?title=Foo3DM1
Hope some of you will give it a try and let me know what you think!
Quick tips:
*To start a fresh page for one of your maps, just alter the address for my map above with the name of your map, and it will automatically create a new page with that name.
*Levelshots/Screenshots can be uploaded to the wiki using the 'Upload file' link on the left (you might have to log in to see this). Please give your images distinctive names (like foo3dm1_levelshot.jpg) or the image will probably get overwritten down the line with someone elses poorly named image

*Anyone can edit a page, and if anyone wants to try their hand at writing a review, it would fit nicely onto the 'discussion' page which accompanies each article.
http://www.fps-media.com/q3wiki/