used to be great but the update ruined it, i have no use for it without the blacklist option

It was working at first, then it suddenly decided to be globally disabled, despite the box for the option being checked. Now I have to manually turn globally enabled on and off on a website for the blocker to work again. Even then, once I leave that page or website it goes back to being globally disabled all over again. I shouldn't need to do that on a popup blocker.

did not work on foxnews(.com) or lyrics(.com)

Not effective. Seem to be getting just as many popups as I did before installation.

I send daily reports to this creator. Daily! Each report details the next website that gives me popups. Strict blocker? I think not.

I don't know how this works for normal pop-ups, because I already have a extension that blocks them. but I wanted one to block annoying ones that open a new tab every few times I click on a html5 player to choose a control. this add-on did not do anything more than my old one did from another author.

Every time I try to add it, or Facebook blocker, it invites me to download Firefox for the 43rd time

Doesn't work on many pages.

Sounds like a good idea, but in practical use, it's not. For casual browsing, I guess it is probably useful, but for everything else, it just messes up. At work, I access documents on-line, which are opened as pop-ups (yes, it's stupid, but that's how it was designed and there is absolutely nothing I can do to change that and, because it's work, I have to deal with it, and for a good part of my day). White-listing my work's site didn't work, neither did the forceful open option (the pop-ups opened blank, because they were, actually, redirects from the add-on, so the site didn't trust them and, therefore, the access was denied). In the end, it caused more troubles than occasional pop-ups would.

doesn't work on youtube

Yes it's strict - enough to break most web pages. If that doesn't bother you perhaps getting a prompt on every single web site you visit might. It bothered me. I found it far too invasive to be practical.