missing in action

this week i've been struck by the lack of Banksie billboards up on my usual routes. today confirmed their absence, as i didn't see a single one driving out to the airport and back from Kingsland. anyone know why they've come down over a week early? or have i just been uncommonly lucky not to strike any?

Update: It looks as though it's just Roskill-Avondale who has been cured of the great Banks Rash - Eden-Albert certainly had billboards, on both public and private sites.