According to eMarketer estimates, 36.6% of mobile phone users ages 0 to 11 used smartphones in the UK in 2012, and this is expected to almost double by 2017. Kids are increasingly utilizing the device’s full capabilities, making limited-function mobile phones a potentially tough sell.

Ad agency executives expect strong growth in their use of both online and mobile videos in 2013, likely because they now consider these channels equally or more effective at reaching audiences than traditional television. Agencies have also seen an evolution in the way clients are measuring the success of online ads.

Smartphone users in China are by no means cynical about apps. Users in the country were more likely to download and try out new apps than those in the US. China’s smartphone users were also more likely to make in-app purchases.

Travel is already a mature online sector in the US and digital sales will continue to rise at a healthy clip, even as travel’s share of total ecommerce sales begins to decline, according to a new eMaketer report. Mobile will be a big part of the continued growth story.

Among teen Facebook users, the median number of friends they have on their profiles is around 300.

Among the things teens choose to share on social media, their real name and photos of themselves rank the highest. What else do they share?

Explore what teens choose to share and keep private and with whom in this infographic.

Answer the question in this interactive to begin building the interactive profile, and explore what teens share about themselves on social networking sites and what they post and prune on their profiles.

The typical (median) teen Facebook user has 300 friends. The larger a teen's network, the more likely they are to have a wider variety of friends and share more personal information.

Teens are sharing more personal information on their profiles than in the past. They choose private settings for Facebook, but share with large networks of friends. Most teen social media users say they aren’t very concerned about third-party access to their data.