Do not have glass eye balls

Recently when i was waiting for the bus at a bustop, i saw that the glass sign board was smashed. This is not uncommon actually in Perth and i think people throw bottles into the sign when they speed by with their cars. Yes, its incredibly dangerous but i think it takes quite a lot of force to break these screens because i am sure they are not normal fragile glass. Having said that, i thought the shattered look is rather pretty.
Be careful where u place your feet or they might be sliced off. OUCH!
And finally i wonder if this effect makes the advertiser more prominent and get more customers? Maybe they did it themselves to boost sales.