Just made a banner [1] and a button [2] for web. The sizes are non-standard but the button seems quite usable on sidebar of blogs / sigs etc. I'll make standard sizes if design is ok.
[1] http://suchakra.fedorapeople.org/fudcon-designs/fudcon-banner-nonstd.png [2] http://suchakra.fedorapeople.org/fudcon-designs/fudcon-button-nonstd.png