PBLU is an online social network of educators who continually learn and share how to do Project Based Learning. They are piloting several Common Core aligned Math English/Language Arts projects with complementary online classes.
How Teens Are Changing Social Networking [INFOGRAPHIC]
Post on social media from for maximum effectiveness. (not sure if this works, but worth a try) The Best and Worst Times to Post on Social Networks (Infographic) (I pin this with the caveat that it depends on your audience)