I have contacted the wikipedia people about their logo and if its trademarked:
en.wikipedia.org...:Copyrights
The Wikipedia logo is copyrighted (and most likely trademarked as well). If you want to use it somewhere, you need to get permission from Jimbo Wales
or the board of the Wikimedia foundation. --Carnildo 05:41, 1 May 2006 (UTC)
It is indeed copyrighted, but at least some instantiations were released under the GFDL by the author. It is also apparently trademarked. But
regardless, it's friendly to not use it, so that there can be a clear separation between Wikipedia proper and other projects (even though they might
use the same content). — Matt Crypto 08:15, 1 May 2006 (UTC)
No work based on the logo can be released under the GFDL. You would need either explicit permission or a fair-use justification to use any such work.
This is the page of the fellow that would need to be contacted for use of the wiki-logo
en.wikipedia.org...:Jimbo_Wales
Don't know if thats even something we want to bother with or not. But there is the information.