Opens a tab at the far right containing a webpage asking for money(donations), then shows google ads in there.

Completely useless.. I can't even save a list of crawler user agents (like Googlebot or Bingbot) with which I want to visit a site.. a single textfield isn't going to cut it.

They popped up an ad begging for a review when I was doing something, and then when I removed it I get a "why did you uninstall". I'd expect that in Chrome not FF.