User:Saibo asked me to forward it to this list: 

I saw the current WLM central notice banner uses the "poty stack": aside from being not really a suitable pic for WLM the usage of that image is a copyvio. The authors are not mentioned on the WLM page (where the banner links to) and not even a link to the authors is available. The topmost, most visible image is copyrighted (but, of course, freely licensed).

He is talking about this picture: https://commons.wikimedia.org/wiki/File:Poty_stack_2006-2009_thumb_77x60px.png

Should we do something about this?
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Béria Lima

Imagine um mundo onde é dada a qualquer pessoa a possibilidade de ter livre acesso ao somatório de todo o conhecimento humano. Ajude-nos a construir esse sonho.