According to wakeup2thelies.com Al Gore wants to use your Facebook and Twitter accounts to spam all your friends with his message during his 24 hours of reality campaign.
Apart from the security issues with giving anybody access to your accounts and the right to post as you there is just something plainly wrong with letting a 3rd party use your account like this to spam your friends with something you didn't write.
BTW If you want some fun around this event see the article on WUWT.