bit.ly URL Shortner

Option	Description	Default
bit.ly login	Site-wide log-in name (username) for bit.ly	None
bit.ly key	Site-wide API key for bit.ly	None
Use site-wide account	When set to "yes", only the site-wide account will be used for all users.	Disabled

Setting up bit.ly as URL shortener
At the moment, this is only used by the Share feature. By going to bit.ly, you can register and request a key. As Admin, you can force all users to use the site wide key which gives you a nice overview on the pages shared by your users and the feedback on that.

Setting up bit.ly as URL shortener