As a developer can you cope with the pace of new broswers and standard? Google is launching their own browser very soon. It's like a car builder now having their own engine factory.
I have seen commercial sites around here still WARNING users that their site is best viewed by IE 5.1 or 6 while IE7 is nearly obsolete with IE8 just round the corner.
I have also seen websites still support only IE without any consideration of users using Safari, Firefox or Opera. I guess with the pace of new broswers/standards joining the race it must be good business helping businesses to update their website designs.