Giving up being flippant in the admin ID isn't that big a deal -- it would keep the trademark from dilution, anyway.
But if the mark is just for warning (and not for "Official Stompy Post") then there are reasons to not always have it.
It occurs to me now that I'm only just realising it was a warning logo.
Added one more. It needs some cleanup, which I would do, if was the way to go. link
I think I like 1 the best.
I like 1 or 4.
If the point is to stop someone and get their attention like nothing else on this board, then number 4 does that. It is unmistakable.
The others are great, but the stompy-ness gets lost.
Although I expressed a preference, it seems that the stompies should do the choosing since they will have to do the stomping. Hesitating to stomp for reasons of tolerance being better than hesitating to stomp because the stompy didn't like the stamp.
Sorry, I think the foot ones are too silly.
I like 1, 2 & 4, but I'm willing to yield on the Doc. Function is good.