A webcam is a little camera hooked up to the World Wide Web. Every few minutes, it snaps a picture and posts it on a website. People from all over the world can see what's going on in the area covered by the camera. Well, theories of closet exhibitionism aside, many stores use it for security.
Scientists can use it to track experiments without having to be in the lab.
Kids at MIT use to know if the Coke machine is empty before making that long hike to it. I've even heard a story about families that are apart at Christmas setting up a Webcam to facilitate a virtual family reunion. Finding great movies to watch is like a treasure hunt. Sometimes you find gold, but most times, you end up wasting a couple of hours. Every movie is rated on a scale of 1 to 12 points on drama depth, humor, action, and sex.