SNPedia (pronounced "snipedia") is a wiki-based bioinformatics web site that serves as a database of single nucleotide polymorphisms (SNPs).

SNPedia was created, and is run by, geneticist Greg Lennon[2] and programmer Mike Cariaso,[3] who at the time of the site's founding were both located in Bethesda, Maryland.

[9] In 2009, the anonymous woman ("Lilly Mendel") was revealed to be 23andMe co-founder Linda Avey, allowing a direct comparison between her actual traits and those predicted by Promethease a year earlier.

[10] In a June 2008 article on personal genomics, a doctor from the Southern Illinois University School of Medicine said: The availability of online tools such as SNPedia means we are now in the position where the patient often knows more about their risk implications than their doctor [...][11]In January 2011, technology journalist Ronald Bailey posted the full result of his Promethease report online.

[12]Members of the medical community have criticised Promethease for technical complexity and a poorly defined "magnitude" scale that causes misconceptions, confusion and panic among its users.