basically what this button does is to make recommendations for people when they are in desire for it. hence a blogger might see traffic if most have his readers are making recommendations to thier friends and family.
It is quite clear that thus was well thought out to make a more social featuring to thier search engine and over time we will see if it will work that way.
How can i get this on my website?
It is really easy and simple. if you are on blogger it is already a feature accross the plateform but if you need to insert it into your wordpress blog or any other platform then you should head over here
YJ!blog also did a search for a WordPress plugin… and we found the one below but it is best to keep in close contact with our blog for a proper plugin. Google +1 WordPress Plugin
Personally this looks to be a great idea yet but it only looks for time to tell if it will get the right support or traction it should. we will keep a close track on this story.