Google just launched a new service simply called “+1”. For internet forum denizens, +1 is a way of telling the previous poster in a forum thread that you agree with his post.
Google has used +1 in a similar sense. Google says that +1 is the digital shorthand for “this is pretty cool” or “you should check this out”. Google +1 is therefore not much different from the Facebook “like” feature, although that one is in a social network setting.
Google will show +1 buttons next to all search results and ads. Other sites are expected to include the +1 button. Before you can +1 something, you need to be signed in to your Google Account. You’ll also need a public Google profile. When you create a profile, it’s visible to anyone and connections with your email address can find it. To recommend something via Google +1, all you have to do is click +1 on a webpage or ad you find useful. Your +1’s are stored in a new tab on your Google profile and you have the option of making your +1’s public or private.
On its face the Google +1 looks like an attempt to make Google more social. I can see however that this one will be much useful, hence successful, compared to the other attempts of Google at creating its own social site.
Check out this video introducing Google +1′s features.