Internet Explorer - love it or hate it. But there's one thing that you can't do; is ignore it, especially if you're a web developer. A large number of php programmers I know or have interacted with; who know about and use the Web Developer Toolbar on Firefox aren't aware of the Internet Explorer Developer Toolbar. Not that all php developers don't know of Microsoft's offering for Internet Explorer, many developers ridicule Microsoft for bringing it out rather too late, but...