I suspect that you'll find it to be some kind of power law distribution, which implies that measures like Standard Deviation won't be so useful. A quick look a

I suspect that you'll find it to be some kind of power law distribution, which implies that measures like Standard Deviation won't be so useful. A quick look at the top 1000 that you provided suggests this might be the case. But the top 100 users don't dominate the top 1000, let alone the entire population. There does seem to be some leveling off, though it's unclear how steady that will be. Net - domination is too strong a word. Dominated might imply 20% of the karma in 20 users, and this clearly isn't the case. Even defining the Elite as 100 doesn't get us this.