Firefox is my favorite browser. The biggest reason for this is its repository of useful plugins. The only problem which I see in its default installation is the screen usage. With this I mean, Firefox wastes a lot of screen real estate in unnecessary menus, buttons. The good news is that it also provides flexibility to customize its overall look and feel.
I have to tried to optimize my Firefox, and I am pretty happy with the new look. It gives more space for webpage.
Torrentz.com is a great site. It is a basically a one stop destination for any torrent search. I personally find it very useful as it automatically syndicate all the torrents from various sites like piratebay, mininova, demonoid etc.
Before downloading any movie from torrent I usually check its rating, synopsis & star cast on IMDB. I find this process very cumbersome and boring to search each movie on IMDB. To ease out this process I searched for a GM Script(GreaseMonkey Script).