I love the idea and the implementation, I've been looking for something like this. If you could filter by language it would be a lot more useful. Is that possible?
Ah... good question.. Rank is based on followers. We were naive at thinking we'd index all G+ profiles so we added rank in. But, it's only a relative rank in relation to our data set. We do have Mark Zuckerberg and his rank is still tops in on index. We'll probably remove it or make it more clear.
http://www.findpeopleonplus.com/profiles/1059936479729639341...
Vs:
https://plus.google.com/105993647972963934118/about
EDIT: Also, you've specified that I have 0 followers and am following nobody. That is untrue. I just elected to not share that information.