Share stories with AddThis social media links

Notice the small orange plus sign and graphic at the end of each story: 
 
It's an "AddThis" button that lets readers post a link to a story on CTEcouncil.org to their social media networks like Facebook, MySpace, Twitter and more. Try it out and  post a story to your own social media page and then let us know:
 

 
 
What are the most popular sites that we should link to in this pop up? Right now we have it set up for:
Favorites (Bookmark) ; Email; Digg; Facebook; Twitter; Google and More.

Email is always the most popular, and I think Facebook and Twitter are next.What do you think?