Clearing cookies upon logout discouraged

Hi.

While it seems like the Right Thing(TM) to do, I believe that clearing the mixpanel cookies upon logout is contrary to mixpanel's recommendations. Unfortunately, I don't think they want us to ever clear it at all.

For example, for an acquisition funnel, they recommend that you set some kind of superproperty signifying that a user is logged in. That way you can exclude those users from the funnel so that existing users don't get mistaken for non-converting new users. Yes, I know - that's a lame way of doing it that's error prone, but that's all they got :(. And if we clear the cookie, even that won't work :-/.