Google is making a big new push into social with a feature called “+1” that is similar in purpose to the Facebook “Like” button, but integrated directly into the world’s biggest search engine.
Starting Wednesday, users who opt into the +1 button experiment(and soon everyone else) in Google Labs will start seeing a +1 icon next to each link in Google search results.
Google defines this action as a “public stamp of approval,” and it is exactly that. When you +1 something, your name becomes associated with that link “in search, on ads, and across the web,” according to the company. It also shows up in a feed on your Google Profile, which is required to use the product.