Now that you get badges for referrals... is it possible to see how well you're doing on those badges (e.g. by seeing the number of referrals in the past three days, and all time?)
If not, can we have that feature?
I do this by using a url-shortening service like Google's goo.gl and sharing that link. I'm sure other URL shorteners do this, but goo.gl allows you to see the number of clicks in the past two hours / day / week.