Hi Laurent,
kudos for the progress with respect to the number of articles.
On this page, there is a confusion between « libre » and « libre de droits »:
http://fr.wikimini.org/wiki/Wikimini:R%C3%A8gles_d%27utilisation_des_images
They are not equivalent, you may want to fix this.
My understanding is that Wikimini allow contributors to use non-free medias ("non-free" as in non-DP-or-non-using-a-free-license). Maybe I read to quickly, but I tried to view this image:
http://stock.wikimini.org/wiki/File:Chat-3551.jpg?uselang=fr
and could not find copyright information.
When trying to check on flickr, flickr asks me to log in (??).
Finally, a tiny UI glitch: C-<left-click> on an external link (like a link to flickr) will ask the user to confirm she wants to leave the page, while C-<left-click> will open the link in a new tab for most browsers I know -- the confirmation is not needed.
Thanks for further enlightenment about the copyright policies, and good luck for taking this project forward,