Regarding Dave's Regard.

Dave, although it wasn't public domain, there was a high level investigation into the causes of the Post Deletions.
Unfortunately, the Powers-That-Be don't deem it necessary or benefitial to divulge exactly what the findings of that investigation were (they will be become public domain 12.26.13). However, you can take my word on it that this investigation went right to the top.
Although little more can be said of this topic, rest assured, agreements between representatives of the interested parties were made, and thus, it is unlikely that you will see future Post Deletions.