A transparent logo for the arch linux wiki.

Made in GIMP

A transparent logo for gnome-look.org

Made in GIMP

A transparent logo for the cracked.com forums, which were previously on pointlesswasteoftime.com

Made in GIMP

A transparent logo for Arch Linux, inspired by the archlinux.pl logo that was already uploaded, and another one with the logo on the left.

A transparent logo for ultimate-guitar.com

Made on GIMP.

enjoy!

edit:
added a third image w/ more opaque reflection
added a fourth image w/ clean(no blur) opaque reflection
added a fifth "spiced up" logo w/ inner shadow, clean opaque reflection and slightly smaller logo size
added a SIXTH "spiced up 2" with iphonish effect

The links in this comment no longer work--

Ok, we have transparent logos, so why not have a transparent background? Well here I will show you how to do it.

Before you get too exited, I'm going to tell you right now that this isn't perfect. It only looks transparent if you don't have any windows under firefox, and if the top right corner of your firefox window isn't in the top right corner of your screen, the "illusion" won't work. If you think up of a better way of doing it, tell me =].

This one is another requested by L0mass

Another one for L0mass.

Cheerz
Voodoo

This one is a request by L0mass

Cheerz
Voodoo