> [3] I always associated tabs with Opera, though.

Yeah as someone who picked up Firefox when it was Phoenix, it was “free Opera with a less-odd-feeling UI”. That was basically the initial (great!) sales pitch.

What got me installing it on any computer belonging to a person I would have to help support was the auto-pop-blocking and that it performed a ton better than IE/Netscape/Mozilla. Opera also performed better and I think it also blocked pop ups out of the box, but it wasn’t free (well, kinda, but the free edition… had ads).