Considering that the conversion/migration from www.avidgamers.com was to a subdomain of the original domain to ag2.avidgamers.com... it wasn't much of a migration.
It's been 5 years... everything went dark in 2007.
From the few posts I've read where people were asking about the site and where it went/why it went down, there doesn't appear to be any single site that members migrated to. They seemed to drift to many of the other sites that are out there, without any majority going to one single place.
So, no one really took over when avidgamers.com collapsed. Or rather, when the domain expired, it was purchased through dotster.com and hosted on a domain parking service called VooDoo.com. No single site rose to the challenge or managed to attract the community that was at Avidgamer.