[citation][nom]Silmarunya[/nom]Strange... Has FF introduced a single new feature lately that wasn't copied from its competitors? The big orange FF button is a copy from Opera's button. Tabs on top are nicked from Chrome. Its new extension framework is a copy of Opera's and Chrome's. This http hiding has been done by Chrome and Opera for a long time. Face it, FF is no longer innovative. Like IE, it became the 'solid, dependable, but not very good in any way' choice.[/citation]
Firefox was really lagging behind its competitors at version 3.6.x. In order to catch up, they had to start by doing what everyone else was doing. In UI design, copying a good idea isn't necessarily bad. It makes it easier to transition and causes less confusion. Why place the tabs somewhere else, like to the right or at the bottom of the screen, when all that would do is confuse users? The orange button is located where the window options button used to be located in WinXP and earlier, so people are used to finding some functionality there.
It's the same with cars - the basic layout of the steering wheel, dashboard, pedals etc. is the same. There's no reason to suddenly start putting the speedometer somewhere else or swapping the gas and break pedals just to avoid copying your competitors.
I would love it if more Windows applications adhered to the same UI guidelines, instead of each developer inventing his own rules. The ribbon was one such attempt by Microsoft, but clearly it's not being adopted by other developers.