This bit annoyed me as well

Is controlled comforting harmful?
Despite concerns about potential harms to the baby, no studies have shown any psychological or physical harm from using controlled comforting or other behaviour management techniques described on this site. In fact, follow-up studies have shown that babies who have undergone controlled comforting are more likely to sleep better in the short term and are as well adjusted as their peers in terms of behaviour and sleep in the long term.
Kelly - don't you have info to the contrary?