A lot of atheist groups have done it. Religious groups do it all the time. Why not the Church of the Flying Spaghetti Monster?
Prophet Bobby Henderson is considering putting up a billboard of the FSM! He’s taking submissions right now… paying for it will be Phase 2.
My vote currently goes to this one:

Wouldn’t you love to see that in your city? 🙂
It’s Moving Day for the Friendly ..."
It’s Moving Day for the Friendly ..."
It’s Moving Day for the Friendly ..."
It’s Moving Day for the Friendly ..."