Social commerce has reinvented itself many times over but has yet to prove itself as a solid sales tactic. Next year, the version that has been evolving during 2018 could finally take hold.

As 2018 nears its end, we are looking back at what happened with Facebook usage, monetization and data privacy over the past year, as well as forward into what changes 2019 may bring.

Mobile will continue to attract more ad dollars in 2019. With that in mind, this report presents 10 predictions to help marketers navigate the mobile and media landscape in 2019.

In the latest episode of "Behind the Numbers," analyst Debra Aho Williamson joins us in the studio to talk about social stories—what she calls a 21st Century daily diary. What is it about stories that users and advertisers alike seem to find so appealing?

The New York Public Library is getting readers to continually engage with a feature originally intended for expiring content.

Just like their younger cohorts, Gen Xers are shifting their viewing habits from traditional TV to digital video.

Stories are hot in social media, and the ad opportunities are growing fast. How are consumers using stories, and how do they respond to marketing in stories?

This year, 64.8 million millennials will watch digital video at least once a month, according to eMarketer estimates. That figure will continue to increase year over year, reaching 66.8 million by 2022.

Among the $327.28 billion spent worldwide on digital advertising in 2019, 61.2% will go toward advertising on Google, Facebook and Alibaba. This report includes our latest global ad spending forecast by country, region and company.

Popular social networking app Weibo (Sina Weibo) will continue its double-digit growth this year in China, according to eMarketer’s first forecast on Weibo usage. This year, Weibo usage will grow more than 17% to 340.1 million people in China. By the end of 2018, 24.6% of China’s population will be a Weibo user.

In the first of a three-part series on digital video and TV, analyst Paul Verna breaks down the data on ad spending and subscription fees. When will digital video ad spend catch up with TV ad spend? How much subscription income is flowing into services like Netflix and Hulu?

This third annual StatPack compiles key metrics around digital video, television and the relationship between them.

This year, 84.8 million people in the US—or roughly a quarter of the population—will use Snapchat, a 7.1% increase from 2017, according to eMarketer estimates.

Heather Watson, consulting and behavioral insights lead at research and solutions firm CGK, discusses how to market to teens on YouTube and the importance of having an authentic brand personality across platforms.

Daily time spent with digital media will surpass traditional media in 2018. Increased time with digital video, which will reach 1 hour, 26 minutes, is a main driver of the increase of time spent with digital media.

This year, 104.7 million people in the US—or 31.8% of the population—will use Instagram, a 13.1% increase from 2017, according to eMarketer estimates.

Our updated US ad spending forecast shows digital ad spending outpacing expectations. Digital media will capture $111.14 billion in ad dollars in 2018 and surpass traditional media ad spending by 2019, according to our latest estimates.

For the first time, we have created estimates for social network video ad spending, including Facebook, Snapchat and Twitter. In 2018, the segment will total $7.85 billion in ad spending.

Based on consumer surveys, the holiday season is shaping up to be more mobile-driven and social media-influenced than in years past. According to PwC, the 2018 holiday shopping period is on track to be one of the strongest since 2005.