Four short links: 22 June 2009

Half of All Friends Replaced Every 7 Years -- to put it another way, the half-life of friendship is 7 years. (via zephoria on delicious) Crowdsourced Car Design -- an interesting approach, and I can imagine it being described as "threadless for cars". (via timoreilly on Twitter) Australian Gov 2.0 Taskforce -- The Aussies are getting their Gov 2.0... http://ping.fm/midRr