We're all human, OFD. What, moderators aren't supposed to have emotions and opinions now? Whoops. Guess I'd better get to writing that ForumModeratorBot. Then we can fire all the forum moderators and get on with the important things in life, like flaming the automated moderator script. =P
On another forum I went to, the admin actually tried applying one for fun. We even got to argue with it but he had to shut it down when it began to publicly display IP addresses.
There are just some jobs that a computer shouldn't replace. :)
Until the odd piece of new spyware comes along that no decent anti-spyware program knows about yet. It's happened. There are a few I've heard of that were an absolute PAIN to get rid of for the unfortunate IE users who'd caught them.
True, Firefox isn't completely secure either. But at least they're finding and fixing the exploits on a regular basis. There's even a $500 bounty for finding bugs in Firefox! The developers are really serious about this. By contrast, Microsoft doesn't always patch the exploits, and when they do it's usually in the form of "critical security patches" that hardly anyone ever installs.
And finally, the exploits that do get through Firefox are the reason that I still have my spyware remover tools. I have a double layer of protection, which is always better than just one of those layers by itself.
Mixed up registry paths? I've never even heard of such a problem. For any application. Firefox imports all settings from IE when you first run it, and you can do so later on by just going File -> Import.
I'm not even sure that Firefox uses the registry for very much at all. (Which is a good thing, the registry is large and clunky.) It's cross-platform, remember, and Linux has no equivalent to the registry. Most of its settings are in configuration files.
*searches the registry* It's referenced in the registry where it's associated with files, registered as an application. All of which it does perfectly seamlessly (after asking you nicely if you want to make Firefox the default browser, of course). Reverting those settings is as simple as opening up IE, going to its options page, and click "Make default browser" or whatever the button is called. So no problem there.
It also stores various paths and uninstallation information, all of which have zero possibility of conflicting with IE. No problem there.
So I really don't see any registry-related problems, and I've looked pretty hard. Care to elaborate on that?