US social network user growth has slowed to a crawl, and that means the social platforms will compete fiercely for users and engagement. Marketers should optimize their spending to take advantage of shifting consumer behaviors.

For the first time ever, Facebook is contracting in the US: The platform will lose users this year in its home market—and it’s getting grayer.

This year, US adults will spend 25.7% of their social media time on Facebook, down 9.6 percentage points from 2019. As Facebook’s share drops, TikTok’s will continue to grow. US adults will devote 16.7% of their social time to TikTok this year, up 12.2 percentage points from 2019.

We combed through The Markup report about 33 US hospital websites sending patient info to Facebook and unpack why they could face HIPAA violations.

While Instagram giveth, Facebook taketh away. The Meta-owned platforms face diverging futures. Instagram's US user base will increase by 4.0% this year to 128.3 million, while Facebook's will decline by 0.8% to 178.3 million.

TikTok is now the third largest social network in the US, ahead of Snapchat and Pinterest. Facebook won’t be able to stop the teen exodus, Instagram’s user base is growing older, and Twitter will start losing users.

YouTube is the leading podcast platform among US adults who listen to 5 hours or more of these shows per week, with 55% tuning in there. Streaming audio platforms Spotify and Apple Podcasts take second and third place, respectively, while Amazon Music, iHeartRadio, and Facebook round out the top five.

TikTok and Instagram were once again the top US social networking apps of 2021, downloaded 94.0 million and 64.0 million times that year, respectively. Snapchat took third place with a 10% jump in downloads, leapfrogging Facebook, whose downloads fell by 11%.

Among US social video viewers, YouTube is the top platform for watching short-form content, with 77.9% of those ages 16 and older going there to stream videos less than 10 minutes long. The No. 2 spot goes to Facebook, which captures a 60.8% share, while TikTok takes third with 53.9%.

Among US social video viewers, YouTube is the most popular place to watch live content, with 52.0% tuning in on the platform. Facebook ranks as their second app of choice, used by 42.6% for live video, while Instagram and TikTok tie for third with 33.4%.

TikTok takes up more of its users’ time than any other social media platform in the US. This year, adult TikTok users will spend an average of 38 minutes per day on the short-video app. Twitter ranks second, with a daily average of 35 minutes, while third-place Facebook will see 31 minutes per day from the average adult user.

Social media usage gains from 2020 have largely ended. Facebook will have its lowest growth rate ever, Instagram’s user base is getting older, and Twitter is coming down with a case of post-election malaise. However, TikTok and Reddit are still attracting users at an accelerated pace.

We look at 2021’s biggest tech flexes that changed the landscape of business or left us scratching our heads. The year saw Facebook meta-morph into a VR-focused platform, Clubhouse rise and fall, Amazon convert 60 million smart speakers into a giant Wi-Fi network, and more.

Among US gamers, Facebook Gaming is the most popular destination for viewing live gameplay, with 42% watching esports and other gaming livestreams on the platform.