That depends on how closely affiliated with HN the blog is going to be and if our ycombinator benefactors are interested in endorsing such a project. If so, it should be one of them or someone they designate from the community.
If it is not associated to HN, then this is not an easily solved problem.
I love the idea of a community blog for HN readers, but I doubt anyone wants to make it official. Maybe we just see who's interested and hand the reins over to whoever has the highest karma?
I think that just having anybody with enough time to manage would do. As long as there's a focus on community, and everything gets discussed, any power issues should be remediable at the very beginning.
Basically, we should just have a community where the person managing the github account and whatnot is more like a sysadmin than a CEO. The main goal should be to find somebody willing to do a little extra work to get everything working.
Agreed; electing a button-pusher-in-chief shouldn't be an issue until someone actually contributes something, and at this point the OP is MIA. I think you should do it.
If it is not associated to HN, then this is not an easily solved problem.