We're having some odd database errors at the moment. The hosting company has been informed and is attempting to troubleshoot. You can still surf the site, but you'll see errors at the top. If you post, you will get a page of errors which you can bypass with your browser's "back" button. Your comment will be posted.
Working on a fix. Sorry for the trouble.
[Update (5/7/07): seems fixed for the moment. Please comment if you see any other odd site behavior. Or email me directly (wheat at wheatdesign dot com) if the site goes down.]
[Update (5/8/07): we had a brief database outage tonight at about 7:30 PM (EST).]
[Update (5/9/07): still experiencing some occasional errors, though no outages.]