User blog comment:Dopp/Communicate Easily with Message Wall/@comment-2154050-20110926204300/@comment-1656630-20110926210604

The current plan is that the welcome bot functions the same as now: it signs as the most recently active admin, when possible. You may need to update your customizations, though, and we're really open to suggestions about this feature -- it's still kind of up in the air, because we don't know how it will feel once it's live.