Positive reviews can be written by employees to improve the job, and negative in most cases are the work of competition.

Researchers from Cornell University, caused by a growing number of negative reviews about hotels, are on their way to develop a computer program that can detect “imposters”.

The computer analysis the text separating true reviews from false ones, and its based on the accepted belief that those leaving an authentic comment use concrete words such as “bathroom”, “check-in”, or “prices”, while “imposters” prefer terms such as “vacation”, “business trip” or “my husband”.

On the 800 hundreds of reviews of the chicago hotels, computer has recognized 90 percent accuracy of false ones. This is the first such study and has yet to be improved. Nevertheless it represents a significant step forward for the protection of consumers and internet users.