How to build a better web browser - UIWEB.COM - Scott Berkun
For those of us who build applications, this is a particularly interesting essay. I'd like to see JoelOnSoftware's comments. The author worked extensively with IE during its formative stages.
I think he's missing out on one some critical issues however. Being a Windows/IE guy he misses issues around portability of data, representing bookmarks in a way that's accessible from multiple sites, extending the browser through shared APIs. I'm sure he knows these things, but they are anathema to Microsoft's culture.