Well, for that particular repository the README still encourages pull requests, so while that's still there I'd probably expect you to maintain the project. If

Well, for that particular repository the README still encourages pull requests, so while that's still there I'd probably expect you to maintain the project. If you turned issues off and put in the README that you had stopped maintaining the project I'd think that would be enough. Really, I think once you open source something you should be prepared to maintain it for perhaps somewhere between 3-6 months at a minimum. If it's popular, I'd expect you to maintain it while it's still relatively popular and people are regularly sending pull requests and reporting issues. If the repo is still popular, I'd think that you'd probably have to hand it over to someone else if you're not going to look after it. If it's less popular, a simple note in the README should be fine.