Recently, I worked on a project that scrapes the county sheriff's inmate locator site as a roundabout way to get insight into where the delays occur in the local court system.
The photograph, name, age and other identifying information for each offender are available on this site. In this project, we decided that we didn't want to store this data about people who were all being held for charges, but hadn't been convicted of anything.
This data is a matter of public record, but the potential for harm in making it very easily accessible (i.e., via bulk download) did not seem worth it.
Are there standards that you use in your research and investigation about what kind of public information you make readily accessible to others?