Its personal and I don't know why ? ? ? ? ? ? ? ?
So you want to know the "beef" the moderator that deleted that post had with you?
(Ignore suchmoon who always wants to post before me for some
personal reason, even though the post is probably your answer)
Go back and figure out which moderator you have done the most wrong to. That will be your suspect. PM Theymos and tell him why this moderator has it all wrong and Theymos may restore your post and fire the incompetent mod! Include your CV to back up your opinions with your thousands of hours of moderation experience.
OR you and the moderator may not have a meeting of the minds on what a "valid" post is. What is your proof it was personal?