This map allows you to click on little balloons each of which represents a financial supporter of California's Proposition 8. They're calling it a mash-up of Google maps and the Prop 8 donor list. It's got a lot of the donors nervous because they're worried about being subjected to boycotts and the like.
I wonder whether something like it will be coming to Nashville after the English Only matter is settled. Reading this Tennessean story, I think it's possible:
Fearful of the same backlash that followed California’s Proposition 8 vote, supporters of Metro Nashville’s English-only plan not to disclose campaign financing before the Jan. 22 special election, Metro Councilman Eric Crafton said.