Today we have access to too much information. Refers to infoxication. Therefore, it is more than ever necessary to distinguish the wheat from the chaff and read only information that is of quality. However, we know that results of scientific activity have quality is a matter of difficult solution. This chapter describes how he has tried to deal with this problem through a science that uses the scientific method to study science itself: the Scientometrics. Special attention is given to the indirect indicator of quality of scientific articles most used today day: impact factor.