As a chat room it would do fine perhaps, but I don't think Second Life lends itself for the type of discussions we are used to having here, with all the long arguments that come with it. Also, if an EvC-place in Second Life would draw as many people as this forum does, you can say goodbye to the performance.
But it would be nice to have a different experience with some people we already "know" from somewhere. I am going there now for a stroll.