It's hard to imagine a world that didn't require 140-character thoughts and Facebook likes for "significant" social status. But with the advent of such sites as Twitter, FB and Tumblr, the digital life has become a viral disease.
As 2012 nears its final curtain call, reminiscing on the year that was would not be complete without remembering the timeline frenzies and trending topics that were. Behold, here are the 50 greatest social media moments that don't require a log-in. -Compiled by Rachel Francois and Adelle Platon
Click through the gallery above.