This is a highly useful feature with an almost endless string of use cases. You can tweet a string of YouTube videos, e-mail all your Thanksgiving recipes, post a collection of study materials to Facebook -- all with just one short URL.
You can add multiple links to the Bit.ly entry field; just separate them with a space, then click "shorten" and "bundle" to quickly and simply create an all-in-one package of multiple links.
Every link you add will include a rich media preview and Bit.ly's valuable metrics; your bundle can also be customized with a title and description.
We've actually seen other companies with this exact feature -- in fact, just last week, we introduced our readers to BridgeURL, a service for packaging multiple links as a single URL. Sadly, this startup doesn't have the market share and brand power of Bit.ly; we'll see what happens to the company and product in the months to come.