Reddit has long been on our radar as one of the more interesting and engaging content bookmarking and aggregating services on the web.

In this chart, we take a look at how the top Redditors — that is, Reddit users who submit content to the site and comment on content and threads — stack up.

In case you haven't used the site, on Reddit, users have upvotes and downvotes to express their approval or disapproval of content and comments. When a user's content and comments accrue upvotes, his or her profile accrues karma.

Here are the top 20 Redditors as ranked by karma, including those whose karma comes primarily from submitting new links and those whose karma comes from making interesting or insightful comments on the site. They, like their power-Digging predecessors, far outrank the average user in terms of karma and, in all likelihood, their power to direct a certain amount of traffic around the Internet.

And for Reddit users, here's the existing Reddit thread for your upvoting and commenting pleasure.

This infographic comes to us via The Daily Dot and Public School.

Click image to see full-size version.

[sources: The Daily Dot and GoToPublicSchool.com]