While in beta, it worked. The release candidates worked. The final versions worked. Tabs and middle click CHANGED what the internet was to me. Java control, add-ons, everything -- Thank you Firefox!
Sorry, but I feel the need to point out that Opera included tabs in the early/mid-90s, almost a decade before Firefox was released finally, and most features that FF users point out as being brilliant are ones which I've taken for granted since about 2000 when I started regularly using Opera. Yes, back then I had to deal with adverts, which after about an hour of use I managed to completely blank out (so much so that when they finally got *rid* of the adverts, it seemed very odd not having a block of what I considered blank space above the page...), but it's got all the features I need in a web browser (without me having to install several dozen extensions to make it do what I want...) and doesn't use up all my ram with only a few pages open for a couple of hours. Right now I have about 90 tabs open. Yes, I suck, and I tend to use tabs rather than bookmarking pages, but that's fine because Opera copes with my abuse. I have 1gb of ram, and I can quite happily run Opera with all these tabs open, alongside WoW, gtalk (which really *does* eat up ram and I wish I knew why...), ventrilo, foobar2k or vlc, etc etc etc... I use FF to check webpages in, and after a couple of tabs it just slows down to a halt, even without half the stuff I mentioned running.