It's in that awkward state where it kind of works and is really convenient, but you hit its limitations and general slowness all the time. It's good enough that

It's in that awkward state where it kind of works and is really convenient, but you hit its limitations and general slowness all the time. It's good enough that it hasn't been replaced (say by an extension that employs a filter driver to make ZIPs truly behave like folders to all applications), but bad enough that it's annoying and most power users end up with 7Zip or WinRar instead.