Github has this feature on a profile page (yours, anyones) which allows you to see their 'profile' with respect to reviewing changes, creating issues, commiting things, and sending pull requests.
This is for the open-source public facing repo, so its an indication of how you add value to the open source ecosystem. Here's mine. What's yours?
It suggests that I spend more time creating code or sending improvements to other projects, and a bit of time reporting issues in other people's projects, but no time reviewing code.
I've made 378 'contributions' in the trailing year, so about 1 per day. See for yourself.