dvduval - 4:20 am on Feb 24, 2012 (gmt 0)
Most directories that have an active review process charge money for the review. That doesn't mean that all directories who charge have a good review process. The most common reason a directory would not charge is because they are no well established. There are directories large and small that charge for the review process, and there are still benefits to being listed in a well maintained directory. You just have to do the research or get referrals from people who have found good results.