You can cram a lot into a year on the Internet.

And since 2014 is coming to a close, the big social networks are letting us know what snagged our attention this year. Because lists. They do well on the Internet, you know.

If you prefer your annual review in video form, there's YouTube's Rewind 2014. This year's installment, "Turn Down for 2014," stars YouTube celebs dancing and re-enacting widely shared antics including ice bucket challenges, "Happy" dancing, and a wintery "Let It Go" from "Frozen."

Topping the list of trending YouTube videos this year? The spooky "Mutant Giant Spider Dog." Sorry, cat fans, there's not a single feline in the top 10. In the music video category, women claimed eight of the top 10 spots, led by Katy Perry at number one with "Dark Horse."

Over on Twitter, the World Cup was the biggest conversation topic of the year with 673 million related tweets during the tournament, including a peak 618,725 tweets per minute when Germany won the championship.

The most retweeted tweet of 2014 was Ellen Degeneres' group selfie from the Oscars.

But it wasn't all frivolity. In a blog post about popular topics, Twitter pointed out #BringBackOurGirls, Scottish independence, Hong Kong protests and #BlackLivesMatter as big topics. Zooming in on #Ferguson, there were 18 million tweets about those protests in August and 3.5 million tweets from across the U.S. "in the hours following the grand jury's decision in November." You can browse an interactive graphic of 2014 Twitter activity here.

On Facebook, the "Top Global Topics of 2014" were the World Cup, Ebola virus outbreak, elections in Brazil, Robin Williams, Ice Bucket Challenge, Conflict in Gaza, Malaysia Airlines, Super Bowl, Michael Brown/Ferguson, and Sochi Winter Olympics.

The social network further dissected U.S. chatter by category. A sampling: Disney properties were the most check-into places in the United States. (Also, the most Instagrammed, according to CNN.) LeBron James got the most Facebook buzz among U.S. athletes. Beyonce topped the list of talked-about U.S. entertainers.

2014 Year in Review from Facebook on Vimeo.