Michael.Keppler wrote:

There is a favicon with the MediaWiki flower available on the MediaWiki
sourceforge site, but I don't know anything about the copyright of it:
http://wikipedia.sourceforge.net/favicon.ico

avarab wrote:

Brion appears to be responsible for putting it there:

-rw-r--r-- 1 vibber wikipedia 1.2K 2004-11-21 15:51:49.000000000 -0800 favicon.ico

People should always provide their own logos and icons, unless they're running MediaWiki's own web site.

avarab wrote:

I disagree, we already provide a the MonoBook logo as the default wiki.png,
unless you're proposing that we replace that with a transparent PNG of the same
size this would only be an extension of the current interface which provides
some sane defaults which can be replaced later.

Furthermore even if this doesn't make it into the default user interface we
should still replace the current skins/common/images/favicon.ico which is the
favicon used on Wikimedia websites (see
http://meta.wikimedia.org/skins/common/images/favicon.ico) with something more
general.

skins/common/images/favicon.ico isn't used for anything, I have no idea why it was there.