Sorry about the absence of a favicon Juji! I think it got lost somewhere during the server move.
Having a good and distinctive logo is actually quite a high priority, and an increasingly big issue since the current one is not very... logo-ish. In fact, I'd love it if someone could start a mini-project for this. The main thing is to (1) get some submissions and (2) have people vote on one. Don't forget to make sure that people release it under Creative Commons Attribution (cc-by).
One little thing, though: perhaps it is a good idea to have a logo that is distinctive (i.e. not too much like normal music). The logo can relate to either "IMSLP" or "Petrucci Music Library" or both.
Once we have the logo decided, perhaps we can make a small version of it for the favicon. Though I have to say the ones Juji gave look very nice
There's no fire, but considering the increasing publicity (and traffic, for those of you who follow the server stats) IMSLP is getting, perhaps it is about time we start thinking seriously about a good logo, so that people could recognize the site (plus, maybe we can even have some teeshirts).
By the way, a few days ago we broke 50,000 visits by 32,000 different people per day. Stats are at
http://imslp.org/stats if you didn't know already.