You can leave feedback on individual search results via the check and X buttons below the answer. Leaving feedback e.g votes on each code snippet is on the roadmap.
I hit the green check, but I wanted to leave a detailed comment
Ah we only put the option for detailed comment on negative feedback (try clicking the x and a form will pop up). Will also give that option for positive feedback in the future.
Oh, got it, well at least there's a way to leave it!