An article by Damon Veach, Forensic genealogy uses wide range of source materials has been posted on 2theadvocate.com (Baton Rouge, LA). It covers the book Forensic Genealogy, by Colleen Fitzpatrick, as well as explains in detail just what forensic genealogy is.
A good forensic genealogist goes above and beyond the normal research patterns that are so common among family historians. A thorough look at the information available on the Internet along with any hard copy, digital and microfilmed reference materials is necessary to do the job right. The value of all sources becomes apparent and goes beyond the traditional records of births, marriages and deaths.