As non-profits become more social media savvy, they're releasing more and more viral content on YouTube. As we kick off 2013, Google's social video platform released a list of the five most-viewed non-profit videos of last year exclusively to Mashable.
Not surprisingly, Kony 2012 tops the list, having garnered nearly 100 million views. Non-profit Invisible Children's 30-minute viral documentary trounced the other front runners -- the second most-viewed video had 35 million views.
Check out the top five videos by view count in the gallery above. Which non-profit video did you find most memorable this year? Let us know in the comments.