Benford's Law - also called the First-Digit Law, refers to the frequency distribution of digits in many (but not all) real-life sources of data.
Benford's law - Wikipedia
Do you know about Benfords Law? from @WolframResearch
Benford's law - Wikipedia, the free encyclopedia
Benford's Law - How Mathematics Can Detect Fraud http://www.sms.cam.ac.uk/media/1164837
How Benford's Law Reveals Suspicious Activity on Twitter | MIT Technology Review