Mark Zuckerberg and Priscilla Chan gave a lot of money to charity in 2013.

The Olympics were all over Facebook!

Here’s a visualization of how 2013 was a huge year for Facebook advertising improvements.

Time created a tool to tell you when you should get married based on when your Facebook friends did, because Valentines’ Day isn’t hard enough already.

Speaking of Valentine’s Day: there are a lot of great Facebook contests that can be run for the holiday!

Places editor got a facelift!

Twitter decided that they didn’t want to look so different anymore. They’re slowly rolling out new profiles that look suspiciously like Facebook’s.