This is embedded stream of #hurricanesandy using a tool called Snapwidget, which easily enables you to embed a stream of photos from Instagram onto your website:
The Twitter Media blog announced Monday that it would release a tool that would enable users embed tweets more easily. Today it released a script that isn’t perfect called Blackbird Pie that allows you to get a code and embed a dynamic tweet without the post of a blog or article. It’s an alternative to taking a screenshot.
Despite buzz about the new feature (I think a lot of people expected it to be more widely implemented on the site), other sites have allowed you to easily get an embed code for individual tweets for some time, especially if you’re using a WordPress-powered site.