They call it FastShare and it really does make sharing any blog post or article faster than ever. The widget works along with OAuth to automatically authorize the accounts of repeat users.
The first time a person clicks through a ShareThis social media button, they’ll be asked to enter their email and password for the matching site (Twitter, Facebook, etc.) The next time they hit a ShareThis site, assuming they haven’t cleared their cookies, they’ll see a green checkmark on the pre-authorized site icon. If they have a green check, they can enter a comment and share without having to log in again.
Since the whole process happens on your site, you don’t have to worry about losing a reader after they share. And since it works with every site that has ShareThis installed, a visitor could hit your site for the first time and already be authorized to share.
Sharing is the life blood of social media, so you want to make it as easy for people to share your content as possible. This new update to the ShareThis widget lowers the number of clicks needed to do the job and that means you won’t lose a share because a reader didn’t want to take the time to login.