Dotspotting is easy:

Dotspotting is the first project Stamen is releasing as part of Citytracking, a project funded by the Knight News Challenge. We're making tools to help people gather data about cities and make that data more legible. The code for Dotspotting is available for download on Github, and licensed for use under the GNU General Public License.

Recent sheets:
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Random Points 20 by masru created on May 23, 2013
athens street art by aestheticsofcrisis created on May 22, 2013
ini20 kartierung koffein by almereyda created on May 21, 2013
ini20 kartierung mülleimer by almereyda created on May 21, 2013
ini20 kartierung werbung by almereyda created on May 21, 2013
ini20 kartierung bier by almereyda created on May 21, 2013
AllTrailheads by zach created on May 20, 2013
GoldenGateTrailheads by zach created on May 20, 2013
untitled by bubblepix created on May 10, 2013
untitled by bubblepix created on May 10, 2013
Bike To Work by ericrodenbeck created on May 9, 2013
Origin of Europe Art 1000-1400 in the Met by kspiess created on May 5, 2013
Random Points 10 by masru created on May 4, 2013
Spreeacker by almereyda created on April 15, 2013
The Walking Dead Shooting Locations (http://wal... by jefftriplett created on April 11, 2013
random points 5 by masru created on April 10, 2013
Every CCTV camera between James Bridle's house ... by blech created on April 8, 2013
blahs by deathpillow created on April 5, 2013
blah by deathpillow created on April 5, 2013
random points 2.5 by masru created on March 30, 2013
Webasto by rosem created on March 28, 2013
untitled by rosem created on March 26, 2013
Queens College by shanti created on March 21, 2013
Bay Area Performing Venues by radiophonic created on March 11, 2013
bay area performing venues by radiophonic created on March 11, 2013
Kundgebungen by ake created on March 9, 2013
Test by ake created on March 9, 2013
Lacey, Dorothy Joan by Abbie created on March 3, 2013
Mon CV cartographié by AR created on January 9, 2013
untitled by MJTheis created on December 28, 2012
untitled by detjenc created on December 12, 2012
untitled by detjenc created on December 12, 2012
Detroit Public Lighting Department LED Street L... by detjenc created on December 12, 2012
Shrinking Cities by TKSF created on November 13, 2012
untitled by brendancormier created on November 6, 2012
untitled by reeseek created on November 5, 2012
untitled by aveclaudenum created on November 4, 2012
untitled by aveclaudenum created on November 4, 2012
Thongwa Inspection by jde123 created on November 2, 2012
untitled by becker101 created on October 27, 2012
untitled by becker101 created on October 27, 2012
untitled by becker101 created on October 27, 2012
untitled by becker101 created on October 27, 2012
untitled by supmike created on October 25, 2012
Caddo Lake by opath created on October 17, 2012
Caddo Lake by opath created on October 17, 2012
Texas-California by opath created on October 17, 2012
Argus customers by slu@opgen.com created on October 17, 2012
untitled by burnapple created on October 10, 2012
Structually deficient buildings in Los Angeles by aveclaudenum created on October 6, 2012