Do I miss something? Rated 1 out of 5 stars

Well, I know it can tell us that there exists a web bug in the page, but then?

It will only be useful if it can tell us the address of the script which is the origin of web bug, so that we can simply use ABP or NoScript to block the specific script or the whole site from running Javascript.

This review is for a previous version of the add-on (1.5.1).