Why tabs are on top in Firefox 4

In the Firefox 4 nightly builds, and in Firefox 4 Beta 1, we are changing the default tab position so that tabs are on top. This is a preference that users can change by right clicking on any of their toolbars. Moving the default tab position is obviously a significant and to some extent controversial change to the Firefox UI, which is why we made the video above to help explain our rationale. Contributors who [...]