If you're in or around Boston, you should make a point to check out this cool event with SeeClickFix CEO Ben Berkowitz on Monday, April 9th, from 6:30 to 8:30, at 48 Quincy Street in Cambridge:

In 2005 a group of artists and designers rolled out some sod grass in a parking space on a street in Downtown San Francisco. They popped some quarters into a parking meter and declared the spot a temporary urban park. Five years later, Rebar Group's Park(ing) Day concept had spread to 952 park(ing) spots in 162 cities and 35 countries around the world and San Francisco's City Planning Department had instituted an official "Pavement to Parks" program. This session explores how web-enabled, citizen driven "tactical urbanism" concepts are changing the way we plan, design, and program urban public space.