If I am logged into SP, the various pages appear clean, but if I view the same page when not logged into SP, the page includes ads along the border, tucked into odd places such as within the gray summary block where the mountain stats are listed, and many of the words within the body are hyperlinked to reveal call-out windows.
I understand the need to monetize such a large site in some way, so I don't object to the idea of ads in general. If that money helps keep the site active, fine with me. What I would ask is to keep in mind the ways that ads are placed. Too many, and the page's appearance declines. Maybe it's just me, but I have always objected to those hyperlinked word ads.