Nate, You are correct that the ShowLogo property does not have any affect on the "ThinkGeo Demo" watermark. The ShowLogo property changes the visibility of the "Powered by ThinkGeo" logo that is normally displayed in the corner of the map. The "ThinkGeo Demo" watermark is shown on the WorldMapKitWmsOverlay which accesses the demo version of the World Map Kit. I would check to see if you are accessing the WorldMapKitWMSOverlay (Evaluation World Map Kit WMS) or the worldMapKitRenderLayer (Local World Map Kit).