Question: How can I target ads to users who have shared specific types of content, such as photos or videos, on social media?

If you're looking to target ads based on what people share on social media, LensAI is a good option. It combines AI video and image analysis technology to insert ads into visual content. The system can target based on visual, text and audio elements, so you can target ads based on what's in the content, not just the user ID. It's designed with privacy in mind, targeting content, not people, and it's a good option for publishers and advertisers.

Another good option is Cluep, a mobile ad system that bases targeting on a range of factors about people's behavior and preferences. It can target based on comments, photos, videos and audio, and it can target based on keywords, emotions and visual elements. That means brands can target the audience they want to reach more easily. Cluep has run ad campaigns for McDonald's, Toyota and Starbucks, among others.

BLIINK is another contender, using deep learning and AI technology to match brands and publishers through visual content. It offers a range of in-image ad formats and uses image recognition technology to ensure ads are placed in the right context. That means a good user experience and the ability to generate revenue from new inventory without annoying people. The company says its technology can generate revenue from 100% of the content it touches.

If you're interested in video, Qortex combines AI, computer vision and programmatic advertising technology to offer interactive ad formats. It can insert ads into video and target based on context, and it offers a range of ad formats to try to get people to engage with ads. It's good for publishers looking to monetize their content and for advertisers looking for better results from their campaigns.