Helium.com | Business (Other) | What is a pyramid scheme? http://www.helium.com/knowledge/4832-what-is-a-pyramid-scheme.xml Helium.com > Business (Other) > What is a pyramid scheme? en-us Copyright Helium.com Mon, 05 May 2008 19:39:55 GMT Mon, 05 May 2008 19:39:55 GMT The nature of pyramid schemes The unsustainable nature of pyramid schemes has not only made it infamous but also a forbidden concept in many parts... http://www.helium.com/items/1664976-pyramid-schemes Fri, 27 Nov 2009 18:18:01