> My guess is that people submit stories from certain sources, no matter what the content is, to try and be the first submissions and get the karma. Looking at

> My guess is that people submit stories from certain sources, no matter what the content is, to try and be the first submissions and get the karma. Looking at the submission history for some users easily confirms this. Along with other adjustments to incentives for submitting content, some sort of check for whether most of the user's submissions come from the same domain name could potentially be useful - especially for domain names with the top X% of all submissions site-wide (e.g. techcrunch).