Suggestion: Leave the account up, and change the notice that you don't have time to maintain it. It doesn't cost anything to leave it up, and it still allows authors to connect with those who are already here. If the account is independent of your main WP account, perhaps you could hand the account off to a volunteer to manage it?
@BrianGroover Hey Brian. The thing about leaving it up un-tended is that it would basically be a mental nag for me. There isn't going to be any traffic to this account unless I go out and create it, and if I'm not doing that, it just lingers. I've done a lot of campaigning for the project, and the hope was that it would catch on and the community would power it, with me maintaining and moderating. That hasn't happened. And I'm convinced that it won't (unless I dedicated my life to it or something). As far as passing it off, I don't have anyone in mind for that; and no one's come forward. In my mind it was a cool idea that worked okay for a little while, bit it's ultimately a failed attempt, and that's what another person would be inheriting.