What's the best way to find quality repositories on GitHub?

I need to build a Ruby on Rails application that integrates with Facebook, so I’m searching for existing projects to use as reference. When I browse GitHub, there are tons of similar projects but I can’t figure out which ones are actually worth looking at. How do experienced developers evaluate GitHub repositories to find the good ones? Do you typically discover projects through GitHub search or do you find them mentioned in blogs, tutorials, or other resources first? I’m struggling to separate the quality code from the abandoned or poorly written projects.

When hunting for quality GitHub repositories, look at the responsiveness of the maintainers to issues, as this can indicate active support. A well-organized README is essential, but also seek out additional documentation or wikis that might be available. Specifically for Ruby on Rails applications, it’s crucial to check for adherence to standard conventions and ensure there is sufficient test coverage. Additionally, consider following the active contributors since their engagement often signifies the project’s legitimacy.