There are common sites, usually the ones used to watch streamings, that have a lot of pop up adds, so when you try to, for example, wathc a tv serie, appear lots of pop up's. And there are many of them a little bit disgusting.
Many times when we try to find something on the internet using Chrome we find the problem of pop-ups. Trying to perform a search with pop-up windows showing up is annoying and makes searching difficult.