For example, I have keyword and it is mentioned in website. I get daily mentions from the website that actually are the same thing or point to similar product pages of this “website”.
This is much noise data-mentions, because what we want is to know that this keyword is mentioned in website. Job is done.
I mean, It is not critical to know in how many pages, or in how many sidebars or SERP desciptions this "keyword", is appeared on this "website".