Let's say for those who agree to participate in this (setting)
or at least (if desired) to display a common place for all users
Right now, we're not planning to introduce leaderboards, but you're welcome to add a request for such feature/option to our Votebox: http://todoist.com/Vote/ and we may consider it in the future.
I would love this feature. I'm adding it to the votebox!
+1 also from my side :). Thanks.