Reviews & Comments of WatchDog chrome extension

I didn't really understand this one, doese watchdog only bark when you enter the sites that you check off as distracting? also, whats the point? it just doesn't make sense to me sorry, and it has a 5 star review, when no one has even rated it! I just think whoever is responsible for this stupidness that doesn't even make sense should give more instructions. and it only has 3 users xD