The SharePoint User Profile Service (UPS) is an evolving facet of SharePoint that allows centralized storage of info about individual users such as name, department, photo etc. and integrates in various ways with your organizations "people" system - Active Directory.
UPS has been greatly improved in SharePoint 2013, allowing easier setup and configuration, and facilitates SharePoint social features including MySites, Audiences, Social tags and notes. This allows you to get the positive aspects of the Facebook/Twitter/Yammer-style user experience baked directly into your SharePoint portal.
This presentation will be for SharePoint'ers of all technical levels so have no fear - come on down and learn a bit about one of the areas of SharePoint that brings the "wow" factor into your SharePoint portal.