"Woodpeckers seem like kind of obsessive little creatures to me, always beating their heads against an unyielding wall...kind of like the Mudcatters who post obsessively on the political threads here." LH

Ah, Little Hawk, that only shows how little we understand- have you ever seen a skinny woodpecker? So, obviously, its head banging is productive. And perhaps, so are those Mudcatters.