Scott Berkun, who designed and worked on the development of Microsoft's Internet Explorer versions 1 to 5, explains why he switched to Firefox.

He has great praise for the design team, particularly those who have kept the browser focused on appealing to the mainstream user.

"Firefox feels to me like what IE 6.0 should have been (or what i expected it to be after I left the team in ‘99). It picked a few spots to build new features (tabs), focused on quality and refinement, and paid attention to making the things used most, work best."

He also has some helpful critiques for improving the browser, to which Asa Dotzler responds.  The comments to Asa's post are very informative too, Scott has even replied there.