Hi there. Here's a suggestion to very easily explain a rank that appears on the 'Me' tab of the Waze Scoreboard.
When one looks at the Me tab on the scoreboard, you see this:
My points: X
My Rank: Y
This information doesn't actually explain what 'My Rank' means. Because my score is what it is, I've managed to realize that what it is is one's home state rank, all time (not weekly). That said, could the HTML on that page be tweaked to say something more explanatory, like:
My home state rank (all time):
Yep, lots of things Waze is working on, I know, and this is low on the list, but it may be easy and explains something that's hard for a new user to 'get' when they look at this. 'My points' could say 'My points (all time), but that is a little easier to understand at a glance. Rank can mean anything unless one nails this down.