PBS investigates trolling and cyberbullying online, prompting questions about how the Internet should be regulated and what freedom of speech means on the web.

For more details on the top ten Facebook memes, check out the 2012 trends report over at Facebook Stories.

Music Videos of 2012: Whether it was the Justin Bieber effect or not, one can hardly argue against the fact Carley Rae Jepsen's "Call Me Maybe" was one of the biggest pop sensations of this summer.

NASA is so sure the world will not end on December 21st, 2012, they already made a video for the day after.

The Know Your Meme staff have gone back and analyzed a plethora of Internet phrases and abbreviations, narrowing down 10 of the year's most significant.