Ask HN - Should we flag blogspam?

Fairly often we see stories that link to a piece of useless blogspam rather than the original article. The guidelines say that these should never have been submitted. But are silent on what we should do if we notice the guideline being violated.

Is it helpful for us to flag those as we notice them so that editors can more easily find and kill them? Or would those flags just an annoyance for editors, and we should just ignore them in the belief that they will get deleted if they are a problem?