As summer hits its August high notes, many readers have no doubt noticed the wild and recent proliferation of signs along roadsides in East Hampton Town. From Wainscott to Montauk, shoulders are littered with all sorts of commercial come-ons as well as businesses tarted up like a Nevada cathouse with sandwich-board festoonery, flags, and outdoor merchandise in the right of way. If you were thinking so far that this was yet another example of Town Hall ignoring its own regulations, you would be right.