For those interested in the benefits of Tynt Insight for publishers, please read this article:

http://www.dotsauce.com/2010/03/09/website-data-social-shari...

"Email is used for 70% of all social sharing and accounts for 48% of new site traffic."

For comparison, Facebook only accounts for 25%.

I'm guessing Gruber didn't get a chance to review this report from Tynt.