A pro-privacy group funded by donations put up several billboards targeting congresspeople who voted to allow ISPs to sell user information. They wrote on the billboard how much the congressperson took from telecoms and the phone number to contact them to ask them why they voted the way they did.
I like this idea. It would be great if it went a step further. It could be made into a rolling sign via electronics to show a new issue every minute or so.
If they showed how much the same congressperson votes for their issues based on how much money they received from PACs, it would become more obvious how little they are caring about the voters.