For all of you who are interested in virtual business and commerce I can recommend two good resources.
The first is a podcast: the Virtual Worlds BusinessCast. There you get a lot of interviews with people actually working in and with virtual worlds.The address is http://www.voicesinbusiness.com/VWBusinessCast/.
The second recommendation is a small but highly agile community with currently a little more than thousand members: Virtual Worlds Connect (http://www.virtualworldsconnect.com/). There you find people from all over the world who are in some way connected to virtual worlds with a lot of groups on various topics of live and business in virtual worlds.