Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Shameless self promotion

Not only did Bryan Sykes skew the history of using genetic markers to answer historical questions, he danced on the edge of irresponsible science. The problems I have with this book are the following:1)He makes it sound as if he was the major researcher studying human genetic origins. [He was one of many]2)His use of donated samples is shameful (looking up names in the database), and gives genetic researchers a bad name.3)His fictionalized daughters of Eve is confusing for the more gullible reader, and just plain silly for the more astute.4)His shameless promotion of his company is in very poor taste. I would be careful about sending in my DNA sample. He will probably sell his surname/genotype database to the highest bidder.The field as a whole is very exciting and important for historians, anthropologists, forensic scientists and family researchers. It is too bad that this book will be the main way that the general public can learn about the field.