If a Flutherite is inactive for a period of time (no questions, no answers, no comments etc.) are they eventually purged from the collective?

I suppose it is likely that any of us might pass from this earth before we have a chance to cancel our membership in the collective. Is there a point at which the moderators, or the clean up crew or whatever comes along and just flips a switch and the person is….gone? Has it ever happened?
If I feel my time is coming, should I withdraw, or just let it ride until somebody figures out that I am not coming back?
Do not misunderstand-I am not that old, and I have survived a lot more shit than a day in suburbia, or a tough thread or train wreck on Fluther.
I do not intend on leaving soon. So I am not talking about me (some of you might be disappointed at that).
But what does happen to Fluther “account” that goes dark for a long period of time?