It's just good practice when you stop to think about it.
If I'm going to put thought and effort into meaningful posts only to have them subject to the whims of the OP (like thread deletion, for example), I'm going to stop putting that thought and effort in before too long.
There are already a couple of places here where you can exercise full control over the discussion and the threads fully belong to you: blogs and groups.
Oh Glen Beck went away because he was ignored? I didn't know that. That's awesome! lol. He was scary.
And, I didn't know that norm ( that the threads are community property). Thank you. Now I know :)