Here is a page of Poser logos:
That makes so much sense. DAZ needs that. infact I would love to see a watermark feature on the render settings. Allow choice of position ie which corner. Offset from edges and size. And choose file from a watermark directory. Just put your water mark in the watermark path, and then you can select it, or choose none. Would be great for standard watermarks, to show that it was DAZ Studio, with 3delight, or Luxus, Reality, etc. Or just to put your own signature on it like artists of old.