How can I tell a github repository's quality?

Question

Many a time do I find myself pointed out to use some code in some github repository, and I find it hard to asses whether I should trust and use the code.

Assuming The code is an answer to my visible needs, what other parameters should I check in order to decide if using the code is a good idea?

Answer 1

You can check out the chrome extension DevGib that I wrote. It automatically rates Stackoverflow questions and Github repositories before accessing them, by showing a small colored icon next to the link. It's still work in progress but it does the job for me.