I've wondered what would happen if Hacker News cloned itself into one or more additional sites. All the account-based voting and karma would stay the same, wit

I've wondered what would happen if Hacker News cloned itself into one or more additional sites. All the account-based voting and karma would stay the same, with the only difference being the intended subject matter. - Hacker News classic would cover technology/business/Silicon Valley - Hacker News "rest of world" would cover the usual mixture of interesting curiosity-inspiring links There could even be an interface choice to re-combine the two back into one (effectively reversing the split in the first place). Maybe the same thing could be accomplished just by adding an (optional?) tagging system for submitted links, along with a way to zoom into a specific tag's link if that's what you're interested in. Of course, all that sort of begs the question: what exactly is the motivation for running Hacker News? Put another way, what outcome would they be trying to optimize for?