Our prompt was to develop a web application that incorporated video messaging.  My team decided to focus on collaboration and we developed Ivory Slate, a whiteboarding application that supports informal, collaborative brainstorming.  Ivory Slate allows a group to keep the sloppy, informal nature of brainstorming by keeping with the spirit of a real whiteboard where content turns over rapidly and group members can easily share their thoughts by drawing them out and sharing them verbally at the same time.