Twitter cards make it possible for you to attach media experiences to Tweets that link to your content. Users who Tweet links to your content will have a "card" added to the Tweet that’s visible to all of their followers
This is great for appending images, music, video and in our case, links to your tweets. For our clients, this enables them to show a preview of the promotional content to any follower without the follower having to click through. Take a look at the below images for a before and after.
We're excited to have fully integrated cards into the Privy merchant experience on twitter.