“The new Twitter embeds are now fully atomic bits of Twitter: They can contain any media that fits into a Twitter Card — which is how Twitter wants developers to build things into Twitter, rather than create external Twitter apps. While Twitter embeds have included photos for a while — a pointed issue lately— the new version now allows you to embed video, article summaries, Flickr photos, song previews, even mini apps. They also include up-to-date retweet and fave counts and a slight redesign that more closely resembles what a tweet looks like on Twitter.com. “

(via Matt Buchanan @buzzfeed)