Anyone heard of a Courthouse Researcher? There are some job listings for this position. Legit job or scam?

yes, but please don't give someone money for this. Its the same as a para legal and this requires education at a regular university. You can get an ociates degree in this field, and even do intern work for a lawyer. Many law firms hire para legals to do research on a variety of cases. If you are interested, talk to a lawyer first.