Upworthy: 10 Ways to Win the Internets
Addendum (1/1/2014): Another example, as explained by Sonya Song:
As a not quite positive example, MIT Technology Review may show us how to gain little attention. Look at its Facebook page, we can see a lot of big T’s, certainly the logo of the magazine. It’s quite obvious that the stories are shared as links and the logo is automatically extracted by Facebook. As such, these stories have failed to have an interesting or simply relevant visual companion. The repeated T’s may also have turned the fans blind toward this symbol. The sad situation is that, even though the Review generates a lot of thrilling stories, its Facebook presence is far from compelling.