The Firefox vs IE Bashing can go on for days on end but the truth of the fact is that both browsers have their own benifits and downfalls. Here is a list of four features in the recently released Internet Explorer v7 that I found to be quite useful and a probable dose of advice for future Firefox builds. Do note that I hold no bias against any of the two browsers:
Feature #1 : QuickTabs

Now I know that there are a million and two extentions in firefox that will let you do this but the point is not that, the point is the useability of this feature and the fact that it should be a standard feature in Firefox aswell.
I found it espicially easy to navigate though my 20 odd tabs in quicktabs mode while doing research and it made the whole process much faster that your good ole’ Ctrl-Tab.