Kevin Brown of Relative Strangers has recently been accepted into the Association of Professional Genealogists (APG). This is the largest genealogical research association of its kind in the world. This means high-quality training and resources are available to him and there is a code of practice that all members agree to follow guaranteeing the highest level of professionalism from its members.
APG is a professional association for all genealogists supporting high standards in the field of genealogy and has grown from 19 to nearly 2,000 members worldwide since it began in 1979. APG supports existing groups and programs to meet the unfilled needs of professional genealogists.
For information on the work of APG see http://www.apgen.org/
The code of ethics can be found here http://www.apgen.org/ethics/index.html