moderators "moderating"

[Vtach]

There was a recent post that was deleted from a thread without explanation.  I saw the deleted post and noted that it was a pretty direct question but not discourteous or out of order.  As a member of this forum, I would think it proper that if a moderator feels the need to address an issue, the general message be conveyed to the community so the general breach of guidelines is understood.  In the past few months I have seen nothing that was disrespectful, slanderous or overtly offensive toward any members of this forum.  Now whether or not that is because it was all deleted, I don't know.  Call me paranoid but it reallys seems all too "Area 51" to just delete without explanation to the group involved. 

Secondly, it would be nice to know what the moderators consider as criteria for stepping in and what actions they will take.  Is there something agreed by all moderators or is it individual opinion?  It is good to see the lack of name calling and trolls like some bigger forums but at the same time, I don't see anything wrong with asking direct questions and fervent debate.