Blog Action Day explained (from the web site): Blog Action Day is an annual event that unites the world’s bloggers in posting about the same issue on the same day on their own blogs with the aim of sparking discussion around an issue of global importance. Blog Action Day 2009 will be the largest-ever social change event on the web. One day. One issue. Thousands of voices.
Have a look at the short video below about it.
I have registered for this, and please show your support by registering and writing a blog on the 15th October about climate change. You can also show your support by getting a badge from the site as I have done above.