Two days ago Google introduced the +1 button, where essentially you can vote-up content in search results to make them more relevant; for now you will see +1 in Google search but soon you will also be able to vote-up content right from a Web page as well.
In a short time after the announcement a lot opinions about the new +1 button started popping up around the Web and they are very divided, many people like the idea and they feel this button should officially be released as soon as possible, and many others are saying that they are not too enthusiastic about it, because they feel that it should be fair to have at least the capability to +1 something as well as -1 other things. What do you think?
Now the company has said, they are rolling out this new feature slowly, because this still in the testing stages, but Google is letting people join the experimental test to keep testing the +1 button and gain some feedbacks from users to improve the feature. What is interesting is that additionally now there is already a sign up page (+1 your Website), where content creators can visit and register by entering their email address and the URL of their Website to get a Google Plus One button that then can be inserted in a Website; Google will notify subscribers via email when they become available. I think that if you like the idea and you want to be an early adopter is a good opportunity to sign up.
Jun. 12, 2011 Update
Google +1 is already out, you don’t need to sign up anymore just go to the Google +1 your website page to grab your button.