Google recently launched this +1 as google says add “+1 buttons let people who love your content recommend it on Google search”
I run through lot of blogs and forums which I like and lot of people ask us the same question
How to Add +1 To my Php website?
How to Add +1 To my .net website?
How to Add +1 To my html website?
How to Add +1 To my wordpress website?
How to Add +1 To my magento product website?
How to Add +1 To my joomla website?
Please visit http://www.google.com/webmasters/+1/button/ (you can also go through few advance option to get it on http://code.google.com/apis/+1button )
I should say this, Google has really well done it less complex then any other integration “Facebook Like” or “Tweet, Retweet” or whatever else you have done in your life. So all the best and please post your questions so we guys can help you.