Comment 3 for bug 647238

OSX does that because (traditionally) they have 1 button mice. So it is sorta needed.

And I am not a fan of following the lead of anything Windows does. ;-)

Basically, my problem is that I do not like the idea of showing different popup menus based on a modifier. If we show a popup, it should always be the same popup. Anything else would just confuse users.

A better approach (which you can't do right now with our API) would be to add like an 'X' icon near the name of each window in the popup. This would always show. And I would want a confirmation dialog after clicking it. But as I said, you can't do that with our API (now).