Dive Brief: 

• In its earnings call this week, Twitter revealed it had only added 4 million monthly active users, but revenue numbers were more impressive. 
• Twitter's revenue for Q4 hit $479 million, which is an increase of 32% over the third quarter and resulting in Twitter's first $1 billion year. 
• Despite slow fourth quarter growth, Twitter's users were up 20% for the year overall. 

Dive Insight: 

Twitter's been working overtime since its IPO to bring in the kind of revenue it's now reporting.The social site has been testing and revealing new features left and right—including a new homepage it started testing just this week that shows off popular topics and conversations for people to browse.  While it may receive some criticism over its slow growth in Q4, it's impossible to ignore that Twitter is making the most of the users it does have with the increasing revenue.