Originally we held a firm stance that the temp should be ad free for members. But after a discussion held here in site discussion (which was not initiated by staff) pretty much every member said they wouldn't mind if ads were visible to them too if it would help us out more. This was after the demise of shoptemp V1 when funding for the site was precarious.
However if anyone finds the adverts obtrusive there is a button for you to disable them, as others have said already.