"I will reduce my personal contribution to global warming by offsetting the fuel used on all my flights this year but only if 19 other people will do the same."
— Marvin Barretto, United Kingdom
Deadline to sign up by: 23rd August 2006
11 people signed up, 8 more were needed
More details
Offsetting is not the solution but its better than nothing - its our repsonsibility as a collective to do at least something before its too late.
http://www.carbonneutral.com/ is a useful site where people can check their individual emissions and what that equates to in cost to offset (usually around £5-10 for European return trips)
See more pledges, and all about how PledgeBank works.

Marvin Barretto, the Pledge Creator, joined by:
Comments on this pledge
http://www.terrapass.com/projects/scienc...
http://www.landrover.com/gb/en/Company/S...
http://www.climatecare.org/
As far as I can tell terrapass doesn't cover UK-origin flights, does it?
Another thing about climatecare.org is that they make sure to invest in projects beyond those already included in Kyoto Protocol commitments.