- Over 400 skeptical definitions and essays on occult, paranormal, supernatural and pseudoscientific ideas and practices with references to the best skeptical literature ...www.skepdic.com/pyramid.html
- If you post pyramid schemes and chain letters on the Internet, you can expect to lose money, lose Internet access, and possibly lose your freedom ...www.interleaves.org/~rteeter/pyramid.html
- The Police Notebook - Law Enforcement Internet site to promote safety and crime prevention information.www.ou.edu/oupd/ichain.htm