Earlier quoted context omitted.
> They already compress the votes so that it only looks like there are ~10,000 votes maximum, when in fact hundreds of thousands of people have probably voted on certain posts Again I'm out of the loop by several years here. But to my knowledge, no that's not true. There are just fewer voters than you think there are.
It's possible, but it seems unlikely. https://www.reddit.com/comments/z1c9z Obama's AMA. According to the sidebar, (upvotes - downvotes) = 14,700, with upvotes/(upvotes+downvotes) = 94%. Reddit recently changed their algorithms so that the 94% figure is very accurate. That means 14,700/0.94 ~= 15,600 people voted, according to the sidebar. Here are Reddit's traffic stats for the Obama AMA: https://www.reddit.com/r/IA…
The people who are joining reddit now are more lurkers than participants, so as the site grows, the percent of people who participate (vote and comment) gets smaller.