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I made this site because Bank Of America made serious errors to my account on several occasions, amounting to several thousands of dollars. Since BOA was unwilling to resolve these issues, I posted a 1 x 10 foot sign on the side of my wall, which faces Bank Of America.
BOA's response? They called the police.The police asked if it was my house, my wall and if I would take it down
I said Yes, Yes and NO
They said ... Sounds good to me.
So I added a bigger sign.. One that made more of an impact. 2 feet high by 20 feet long
So one of BOA's VP of marketing called me and asked me to take it down and he would resolve the issue and call me on monday. That was close to a 7 months ago.
Since then.. The reaction from everyone is GREAT... Apparently they have done similar things to scores of people.

PS-
The original 1x10 banner.. mysteriously disappeared.