Savanna Herrera was not pleased with Sen. Mitt Romney’s phone system. She said she kept calling his office and pushed the “5” button like the voice advised but couldn’t reach a person. Then she figured she’d push the 3 button. Still didn’t work. So Ms. Herrera did what any other unsatisfied customer might do in the internet age: She went online and left a 1-star review of Mr. Romney, Utah Republican, on Google Maps.