What of "networking" sites, such as LinkedIn, ZoomInfo, WannaNetwork, Ryze, Spock, and others in this vein? They're not social communites per se, and don't offer the same level of interaction or relationship building as social networks do. As such, do they still offer any recognizable benefit in the real estate arena? To this point I've seen no "reward", but haven't really taken advantage of their features beyond signing up and filling in my basic info. Do you think there's a way to utilize their features to reach a different audience than might be found on the MySpace's and FaceBook's? Perhaps a way to connect with corporate relo programs or HR managers? Or, as a way to locate service providers for our business and client needs (after all, it's not always about lead generation and the next transaction!). Just curious how you viewed this other growing Web 2.0 element?