Comment: Never. Not even one.

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Never. Not even one.

The only stickers I see on cars are Ron Paul R3volution and the occasional SUV with Obama/Biden 08 on the back. Whenever I see the latter in parking lots, I commit a random act of kindness by plastering on a free updated Obama bumper sticker showing the Dear Leader's face along with the text:
Somewhere In Kenya, A Village Has Lost Its Idiot