Every year, global leaders attend the World Economic Forum in Davos, Switzerland, to discuss how to better the world.

Again, YouTube is helping you get to join them.

In advance of the January 2009 Annual Meeting, the Forum are opening up four sessions from Davos to YouTube, so that you can take part. Vote on the debate propositions and upload a video with your opinion on the key topics.

The best videos will be played in the sessions at Davos, and the uploader of the best video overall will be invited to Davos to meet world leaders, all expenses paid, and report back to YouTube.

Engage, debate, attend. It could be the start of something big.