Different blogs adopt differing moderation policies. Some, generally for some reason on the AGW proponent side, don’t like to allow too much in the way of dissension and reject many posts that don’t fit the message.
Others, generally of a more sceptical persuasion, adopt a moderation policy that involves ‘snipping’ comments that are off topic (OT) to a particular thread, that are ‘piling on’ or that in other ways breach blog policy. These sites disclose the fact that a snip has been made, and state a reason.
This site has been going for nearly 1 year now, and we have accumulated quite a bit of information relating to rejected posts at various blogs. It would be an interesting exercise to analyse the record here and prepare a paper on the outcome. If anybody wants to do that, go for it!
One of the issues we encounter about doing a job like this blog sets out to do is that it is very hard to maintain the impression of fairness over time, as we pointed out at our counterpart An Inconvenient Comment. The reason is that it seems that the policies of the pro AGW sites result in a much larger number of rejected posts than the sceptic sites. At least that is how it appears from the number of posts complaining about Real Climate, and to a much lesser degree, Open Mind.
We have very few examples of posts rejected at Climate Audit, or Watts Up with That or other sceptic sites. We conclude that that is because those sites tend not to simply reject posts. It seems that posters choose not to complain when their posts are snipped, but the reasons are explained.