Probably most have heard about this, but just in case someone has missed it, here is a short post and a longer post.
The petition itself is here. You may want to check the Access2Research site and the Wikipedia article about it.
Edit:
Here is a post on Tim Gowers' blog and an article in The Guardian. You don't need to be a US citizen to sign the petition and its effects will not be restricted to the US.
It can be considered politics but it is an issue deeply related to the community. This post was intended to spread the information so others can also have a look at the petition and sign it in case they agree with it. It is not intended for discussion, arguing, nor convincing other about it. Blog posts like Gowers' are more appropriate for discussion.