[UFO Chicago] xkcd.com question

[Jay F Shachter]

I really need to be working on something else today, but I gotta ask
this:

Can anyone explain the text in small print at the bottom of xkcd.com,
right above the words "This work is licensed under a Creative Commons
Attribution-NonCommercial 2.5 License"?  I have to know.  Thank you
in advance.


			Jay F. Shachter
			6424 N Whipple St
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