Of course, the impact factor is not without its critics. Yes, it is an objective measure, something we are all supposed to like, but as with all measures, people quibble about how it is calculated and what it means. If you explore the topic on Google, you can find dozens of articles critical of the IF, either in general or for particular fields. Even the Wikipedia entry lists several common criticisms. Like most rating systems, the journal impact factors captures some qualities of journals and may miss other features.