Beyond cool! Kudos to whoever made this. A few points,good and bad:
1. As for the font size, please be a good citizen and use the default browser size --- that is, after all, the one the user has declared he wanted. If that is not possible, please use a relative (e.g, font-size: small; or font-size: 0.8ex

instead of absolute sizes (font-size: 10pt or font-size: 12px). The latter sucks for those of us running a reasonable large resolution or those who have actually set the correct DPI-size for our monitor.
2. It appears that one cannot view this forum with the threaded+expanded mode. It just hangs there with "Waiting for reply..."
3. I really love the "all" button on the subjects. Cool!