In the past few weeks, advertising developers have come up with scripts that will work around Firefox’s pop-up blocking. This is rather like a telemarketer calling someone on the do-not-call list. We installed a browser that blocks pop-ups for a reason. We are not your target audience; we are the people for whom pop-up ads are an invitation to boycott the advertiser.
If you’re selling something door-to-door, some people will buy, some will not, and some will be annoyed. But if someone has posted a “No Soliciting” sign, it’s a sure bet that they’re going to slam the door in your face. Why go to the effort when you know it’s going to be counterproductive?