They should be. I admit it is really starting to give me the s***s. Some ratbag flogging safari tours in Dubai, phones, electronics, the chinese bloody boat show, and now this crowd of bloody nuisances in Sydney. It's getting so there's almost as much spam as there is genuine content.
I have some experience with this particular crew (Sydney harbour Boat Charter). They overcharge, provide a very poor service and have a reputation for ripping off tourists. Why they would want to steal space on a forum which exists for people who own their own boats (and maintain them properly) is beyone me. I suggest opening their link and sending them a rude email.
"if at first you don't succeed....Redefine success"!