Once again, the Home Page contains 3 adverts for a forthcoming item - this one about telling Uncertain from Rustic. Surely this page is crowded enough without wasting space on repeated items.
Same answer as before Ted - in a few hours it will be one and a day after that none. We have overlapping but distinct followings on different social networks and most of them never visit the home page. You may see it an item more than once but you are in a minority (for a few hours, until the "problem" is gone). Sadly there isn't a way of filtering specific items out of the feeds on the home page, but time will do it.