Software Agents Group: Impulse - A scenario in which e-commerce meets "brick-and-mortar" commerce through a system of buying and selling agents that engage in multi-parameter negotiation and run on wireless mobile devices. Wherehoo - A search engine optimized for location-specific searches, used by the Hanging Messages server. Related Work: GeoNotes - Allows users to mass-annotate physical locations with virtual "notes" which can be accessed by other users in the vicinity of the location. comMotion - A communication system that exploits location to provide context-aware messaging.