1. Justin Bieber's split from Selena Gomez was the most enquired-about relationship bust-up while Victoria Pendleton beat Georgia Salpa as the most searched-for participant in a reality television show.
2. Here's a look into social media's crystal ball for 2014. Will Snapchat catch fire? Will those annoying Promoted Tweets keep invading your Twitter stream? Will your boss finally learn to tweet? These five trends are poised to shake up the industry and the way we use social media in 2014: