We are excited today to announce that AddThis now supports sharing to Google+ via the Google +1 button. We know you have been asking us about sharing to Google+ and now this is possible with no changes to your code.
When a user clicks the +1 button they will now have a simple way to type a message and share to their Google+ profile.
One more important change you will start seeing with your +1 button today is personal annotations. When users hover over the button they will see which of their friends have +1’d the same content. If you want to show those annotations in-line we have an API to support that.
Learn how to get +1 for your website by visiting the +1 features page.