I used to use some of these extensions, until I started seeing more pop-ups. Turns out that using these extensions interferes somehow with Firefox's built-in pop-up blocking.
How do I know? Because I was going to submit a bug when I started getting pop-ups, but I found the existing bug entry for the same and read through the entries. Over and over again, the suggestion was: disable your extensions and see if you still get the pop-ups. Nine times out of ten, that did the trick.
And sure enough, when I disabled Tabbed Browser Extensions, I got a lot fewer pop-ups. The extra features of such extensions are nice, but they're not worth Pop-Up Hell IMO.