Actually @qwertypo both commands have screen grab tools! Cmd+shift+4 gives you freehand control to select an area with your cursor, while Cmd+shift+5 gives screen recording, full-screen, and single-window capture. Both very useful though!
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.