Just an FYI, if you use Internet Explorer, the current logo looks weird. This is because IE cannot display PNG graphics properly. I do all my development on either a WinXP machine with FireFox or a Mac, so I didn't notice the problem until today. I'll be switching us back to a GIF (bleh!) tonight.

Complain to Microsoft, not supporting PNGs is just madness.

Technical details: PNG can display multiple levels of transparency, that is images can appear ghost-like, semi-transparent. GIF can only display one level of complete transparency. IE treats PNGs like GIFs and this anything semi-transparent becomes gray.