Since March you’ve probably noticed little +1 buttons next to many of your Google search results. What are they for? It’s Google’s equivalent to Facebook’s “Like” button and lets people recommend web sites to their social circle.
Google is now expanding its +1 feature beyond search to the whole web so you can now +1 a page while you’re on it. According to a blog post by Google software engineer Evan Gilbert, companies lining up to get the +1 button directly on their sites include Mashable, Nordstrom and The Washington Post, to name a few.
In order to +1 things, you first need a public Google profile where there is now a tab that stores any web site or page that you’ve +1′d. You can make this tab public for anyone to see or keep it private and just use it to keep track of your internet favorites.
Read more at CNET.