I had developed my second plugin for Coppermine Gallery, it allows you to edit keywords easely selecting pics with mouse and an autocomplete function to the keywords.
I explain all work on my web page (spanish, i hope get time to translate it soon): http://www.eidansoft.com/blog/plugin-coppermine-graphic_keywords_editor/
I had made a video too: http://youtu.be/Y5Z-_YTA3Mw
I attach the plugin to this post too.
I hope it could be useful.
Bye
Thank you very much for your contribution. I haven't tested the plugin yet, but the video looks promising (just had a short look).
Great! Anything you need, just tell me.