Hi Platonides and Pete, in any case, we cannot use an image licenced under a Creative Commons licence (which disqualifies almost all pictures from Wiki Loves Monuments), as they all require an attribution (the name or pseudonym of the author/copyright holder) and a URL to the licence text (not the deed!).
(Please also note that Susana specifically mentioned she does not need to be attributed to when the WLM logo is used in relation to the contest; however, the licence still requires a working URL to its text, so we are violating its requirements here, too.)
I agree that we (the Wikimedia community) should set an example in the usage of freely licenced files, so I am thinking as what we should do here.
We have two options: (1) remove the image created by Saibo from the banners (but we should then also remove the WLM logo) or (2) add working links to the images in the banners, and possibly also protect their description pages; this would, however, mean that we'll need to rebuild the templates so the links work for the files as well as for the websites; to do that, we could only use the text as the link.
Tomasz