A World Wildlife Fund initiative, Earth Hour aims to get ordinary people like you and I to take a stance against climate change by signing up on the site and switching off your lights on 28 March 2009 for 60 minutes.

The lads at AtPlay.biz have done an incredible job building a social media presence, including a Twitter account and a series of very cool videos with leading personalities around the initiative, and kudos to them for it. There’s also some very cool widgets you can put on your blog to promote your support for the initiative and spread the word!