Well, out of curiosity I've gone and checked. In the last week or so I've made 30 contributions. These give me: 3 points for a single bare comment 89

Well, out of curiosity I've gone and checked. In the last week or so I've made 30 contributions. These give me: 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.