PledgeBank: I will do $FOO if $NUMBER others will too

Tom sez, "mySociety launches our newest civic site PledgeBank today. PledgeBank
is about getting over the barrier to action that is the fear of being
the only person who wants to achieve something. It lets people say
"I'll do something, but only if 10 others will too."

Social/technological hacker Stef "Wikiproxy" Magdalinski has come up with a great subversive pledge already: "Stef will refuse to register for a UK National ID card but only if 3,000,000 people will sign up."

Tom continues, "PledgeBank is the first of the UK
civic coding community sites to be equally useful in the US and the rest
of the world. Happy pledging, and let us know how we can improve our
features for non-British folks."

Link

(Thanks, Tom!)