"Sometimes it's easier to find exactly what you're looking for when someone you know already found it. Get recommendations for the things that interest you, right when you want them, in your search results."
That's the exact quote from Google's +1 page located at google.com/+1/button/.
The "Plus One" feature was in beta testing for a while, and we've been peeking under the hood of that beta for several months to get an idea on how it will work.
On June 1, 2011 as many of you were probably packing for the JCK show, Google officially moved the +1 service from beta to general use and once again changed the way we have to deal with search engine optimization.
From now on, you should see a [+1] button on the Google SERP next to the title of each result. Specifically, y...