Ever had the urge to Like something on an app so your friends on Facebook can see how much you like something because it is now true that “I like, therefore I am”? It’s a primal urge of the modern social being that until now was left unchecked and unsatisfied. To say the least, the world has been an increasingly mobile yet very hollow place without mobile like capabilities.
Well, never fear. Facebook’s quest for frictionless everything marches merrily along with the introduction of the the mobile like for apps.
From the Facebook developer blog
People share content on the web every day using the Like button. While this has been a key part of how people share, mobile apps have not been able to integrate the functionality. Now they can.