Honestly though, I find a ton of content too heavily dictated by it. On reddit, it's routine to see [deleted] posts, or nonsensical one-liners, all with the purpose of propping up (or preserving) their karma. When you've got 1000 comments with 900 of them referencing the current popular (or obscure) meme, it just gets old. I've heard there are some sub-reddits that are worth subscribing to, but I've found HN a better alternative. The content and conservation seems much more filling here.
Every once in a while I get into an interesting conversation in a subthread somewhere -- where a commenter is actually checking back -- but karma comes from the masses, not from individual conversations.
It doesn't matter much, though -- I don't have enough karma to downvote, but I'm not inclined to downvote much anyway -- so it's pretty irrelevant.
Are there other bonuses that high karma earn you, besides bragging rights? On Slashdot (I still go back to visit now & again...) I seem to have the right to disable ads, but obviously that wouldn't apply here.
3 points for a single bare comment
89 points for three polls
13 points for three submissions of a site I'm associated with
285 points for links to other sites.
In that week I've gone from about 19750 karma to about 20230, so that's an increase of about 480. That means I've got around 100 points from comments over the past week.Not sure that helps, but you did ask.
How do you know where your karma comes from?