It's the first marriage I've seen of social networking and virtual worlds: that of Auckland-based Small Worlds and San Francisco-based Hi5.com, by most measures one of the world's Top 20 social-network sites. A bit about SmallWorlds.com (which is not a kids' virtual world) from Venture Beat: Like Hi5, it's aimed at people 13 and up. It has signed up 650,000 users since launch last December, about … [Read more...] about Social site + virtual world = Hi5