Wikipedia is importing articles from Citizendium, and sooner or later they will start to rework them, add their own things to the mix etc., if they haven't done so already. We all know of WP's disadvantages in terms of article quality, fact vs. bias and opinion etc. and the adverse health effects their swarm actions can have on people of intelligence or integrity, who attempt to write there, as one recent discussion topic mentions again
here. (I can only second that. I've had terrible WP experiences myself…
really terrible.)
Due to the nature of the beast people searching the web will find the imported (and probably altered) WP article first, and if we're lucky they will discover the short note pertaining to Citizendium at the very bottom of the article or on the discussion page and realize that it actually originated here at CZ. (I don't know how this priority of WP over CZ can be prevented with regard to imported CZ articles. I personally think it's not fair… but what the heck, the world isn't fair—and it's our own fault anyway.)
In any case, my main concern is with the alterations made to imported CZ articles at WP. Therefore I suggest a subpage for CZ articles called "Wikipedia" or "WP", where CZ authors can address changes made to their articles at WP and comment, criticize or review them. Alternatively it can be called "External" and include not only Wikipedia, but any online or print publication referring to the CZ article.