Moderate threats may profile users online habits or broadcast data back to a server with 'opt-out' permission. In most cases this type of threat is more along the lines of commercial type adware that offer a premium service in exchange for tracking your user online performance.
Desktop Media Cast is an adware program that displays pop-up ads.
Adware - Adware is generally software that displays advertisements. Some advertisers may covertly install adware on your system and generate a stream of unsolicited advertisements that can clutter your desktop and affect your productivity. The advertisements may also contain pornographic or other material that you might find inappropriate. The extra processing required to track you or to display advertisements can tax your computer and hurt your system performance.