Bazaar now has an official logo:
Downloadble vector logo with text (for editing) and large printable version
web-sized logo without background gradient
Icon sized versions: 
Or as a complete bazaar.ico file
(See attachments to this page for more and some history. Also view this thread)
Alternative logos
These logos were designed in the Tango theme by Jakub Szypulka. Also available are the .svg formats.
bazaar16.svg bazaar22.svg bazaar32.svg bazaar48.svg bazaar144x149.svg bazaar192.svg
