The disclosed technology provides systems and methods for filtering information based on a set of properties. The information consists of a set of items that the user is interacting with, such as documents, presentations, audio and video files, and the like. The properties can be specified by the user (by, for example, putting a set of items in lists and folders), based on actions taken by users in the system (such as commenting on, or liking, or viewing an item), or can represent a variety of other characteristics. Related properties can also be grouped together. Furthermore, the disclosed techniques provide mechanisms for automatically identifying useful properties and providing an indication of those useful properties to a user to use in narrowing results.