The logo is nice, but the aliased angled lines really kill it for me. I think a vector (or better anti-aliased) logo would really make a positive difference in the feel of the site.
All browsers have SVG support now, webpages need only consist of text, vector graphics and photographs.
Vector, e.g. drawn with Canvas, would be better (e.g. with a fallback to a single colour png.)
(just checked, after refreshing my cache a few times, and it looks much better now, nice one.)
Generating the relevant shapes and lines for a simple logo would be easy this way, although probably would require a larger download vs. a vector image, since the canvas method would need to load extra javascript to duplicate the SVG support built in to the browser.
I'm not saying it is necessarily a better idea, just that I've had more success with canvas drawing methods than trying to actually make a vector image.
Another advantage is that you can handle generated images as images, not as code, without converting them to raster bitmaps (which I guess you'd be forced to when when dumping the canvas).