So far, all the known clients of Reputation Defender still have true, publically available information available on the internet. Moreover, all of them have been mentioned in public ways, despite being unknown before. So far, it seems that Reputation Defender sucks at their job, because simple Google searches would lead people to factual information about their clients that people have refused to remove because (duh) it's factual and Reputation Defender has only helped make these issues more of a public record.
Yup - it would appear these reputation-clean-up firms are a double-edged sword, IMO.