2008/11/3 geni geniice@gmail.com:
There are no facilities on wikipedia for editing images.
An open interface with low registration requirements, open write access and version history is sufficient, in my opinion. Furthermore, we also have the External Editors interface and have had it for quite some time: http://www.mediawiki.org/wiki/Manual:External_editors
This goes far beyond what sites like Photobucket typically offer.