Twitter unveiled the company's annual "Year on Twitter" report Thursday, including what the company calls the Golden Tweets — the year's most retweeted.
Mourners on Twitter are quick to pass along condolences, and the top two tweets had to do with celebrity deaths.
When Glee star Cory Monteith died in July, fellow star Lea Michele's short note and accompanying photo was retweeted 408,266 times at its peak, including retweets in over 130 different countries.
Actor Paul Walker's sudden death in November generated the second most retweeted post of 2013. The confirmation tweet from his staff garnered more than 400,367 retweets.
The third most retweeted tweet from 2013 came on a much, much lighter note. Niall Horan, a member of the pop group One Direction, turned 20 years old, and Twitter helped him celebrate. His birthday declaration received 375,292 retweets.
