Let's go with
XKCD again to finish out the year and promote a new hobby:
Geohashing.
Randall Munroe hinted at this pastime
earlier in a Christmas-themed comic, but this time thoroughly threshed it out into a full-blown instructional,
complete with interactive website. I was going to try to determine whether the geohashing algorithm had any pattern or if it was fairly random, but somebody already
did that here:
http://wiki.xkcd.com/geohashing/The_Algorithm#Randomness
... which led to this next discovery: Did you know that
geohashing has its own wiki?
Here's another
odd hobby XKCD has originated:
http://xkcd.com/249/,
photos of people doing it:
http://xkcd.com/chesscoaster/
By the way, the secret text that is revealed by hovering over
the cartoon on the xkcd site is:
Saturday is game night.
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