The point of the project is to gather photos to illustrate Wikipedia articles. A list of desired images will be posted at the end of Jan, and then individuals or small groups can go forth and compete to collect the most shots. From the guidelines that have just been posted on Flickr:
1) Shots submitted must be licensed with the correct creative commons license required by Wikipedia. That's got to be either "Attribution Creative Commons" or "Attribution-ShareAlike Creative Commons". There is no resolution requirement.
2) You can only shoot works of art in the public domain, so as a general rule, only works of art created prior to 1923 will be able to qualify. This will differ from country to country, so check with the Wikimedians for general help with this.
3) Images can only be taken at participating institutions (following their guidelines posted below) and must uploaded during February 2009.
4) In the caption, your images must include the object's full identification and credit line from the object's label; your team's name; and the category this image defines so that we can assign points. Each institution may ask you to tackle getting this information in different ways, so best to see the each venue's guidelines posted below for more information.
5) Images must be your own work, submitted by you.
This could be a great opportunity to engage with the Flickr community in your area - the Wellington group in particular is very strong. You'll also be in very good institutional company: Shelley Bernstein from Brooklyn Museum put out the call this morning, and LACMA, the IMA, the V&A and the Met are all on board.