Comment marketing involves leaving comments with a clone name on related blogs, news articles, and other online resources. Resources are made available through an open bidding system, where the highest bidder wins the rights to comment on a particular resource for a set period of time, usually 1-6 months. The document outlines various rules for comment marketing, including only leaving one comment per topic, maintaining a minimum gap of comments between posts, and fines for commenting on banned or bid-upon resources without permission.