Anybody have any idea about the processing of discussions being aproved?

From my experience it seems they may have some kind of approval filter for some key "bad" words (once one of my posts was pending approval for more then a week, then got approved right after I replaced some words that they probably though were excessive), also they seem to activate the approval system in problematic threads and then they also have some kind of random approvals.

This is just what it seems to me. But we don't have access to exactly how or when the mods will approve.