I am a front-end developer and UI designer. I am pretty much using GitHub every day. I always need to browse through the issues of the repository and find a solution for a certain problem. There is a pain point, at least for me. Here is the scenario, someone’s answer is awesome and get much response. I might want to try later and keep browsing through other possible solutions or I want to save other people’s answers for further usage.
I did a quick UI design and add a feature like save this answer for later. Then maybe you can find the saved answers in your GitHub account? Not sure if is a useful feature.