| Essentially it's a peer ranking system and Reddit is hoping it'll differentiate them from Digg - and perhaps get Reddit some of Digg's huge user base. While Digg doesn't have an explicit reputation system, it does give users rankings according to how many homepage diggs they get. The top diggers page lists the users who have the most homepage diggs and also lists their 'homepage ratio'. Digg's system does seem to be a populist method of ranking users - because users only get a good ranking if their stories prove to be popular enough to make the Digg homepage. So perhaps Reddit's karma system is something that Digg should look at to reduce groupthink and spam? |
| |