Geohashing

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Today I've found this on xkcd.com:

geohashing algorithm from xkcd.com

The funny thing is: today I should be in open sea <http://irc.peeron.com/xkcd/map/map.html?date=2008-06-19&lat=37&long=12&zoom=8&abs=1>.... wow! :-)

Here's a map <http://irc.peeron.com/xkcd/map/> letting you see this algorithm in action. People on my graticule: let's meet someday! ;-)

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