Google Plus 1 Feature: How it works
Google +1 feature is the new option available to Googlers logged into their gmail account. Similiar to the Facebook "like" button, it's a way to let friends that are party of your gmail social group to see what sites you recommend. As of right now this feature will not affect search engine ranking globally, but it will end up affecting your ranking on friend of friend's gmail accounts. It sounds a little complicated, so I'll break it down below.