Passage: "Many local governments now publish their budgets online. Residents can see how much is allotted to health, roads and education, and they can compare plans with actual spending. Supporters say this openness discourages waste and builds trust. Critics point out, however, that the documents are often long and technical, so few residents actually read them. Some cities have responded by publishing one-page summaries with simple charts." What is the main idea of the passage?