They would fit neatly next to the upvote / downvote buttons.
However nicely they would fit, they should not be used, though. I am in the mind of the diagram about the effect Google’s proxy is having on web content—to the extent that karma is not a perfect proxy for good content, sparklines will make it easier to identify that proxy and where it can be gamed.
Perhaps sparklines would work for this. They compress the recent history of a measurement in a space-efficient way which can fit inline with text.
They would fit neatly next to the upvote / downvote buttons.
However nicely they would fit, they should not be used, though. I am in the mind of the diagram about the effect Google’s proxy is having on web content—to the extent that karma is not a perfect proxy for good content, sparklines will make it easier to identify that proxy and where it can be gamed.