This fact, together with the typical “black box” algorithm procedures used by such sites and the lack of published scientific studies about results, compounds the credibility factor determinations of scientific-matching. In the 2007 article in the Online Dating Magazine, former chief psychology officer for True.com, James Houran supposedly “debunks scientific matching”.
 In short, according to Houran, who seems to be targeting Chemistry.com, “the dating industry would be better off validating personality tests and matching algorithms than worrying about background checks.” In sure reference to Pepper Schwartz, Perfect Match.com, sociology professor (University of Washington), author: Finding Your Perfect Match - 8 Keys to Finding Lasting Love through True Compatibility (2006), and Helen Fisher, Chemistry.com, anthropology professor (Rutgers University), author: Why We Love - the Nature and Chemistry of Romantic Love (2004), he concludes: “What we have are groups of authors, nice sounding university affiliations and academicians generally interested in relationships.
 In the seduction community, a site called The Approach.com, motto: “the science of The original application of “science” to the matching of singles, via the Internet, was the use of personality assessments, e.g.
Unless a site is using an algorithm that incorporates Gibbs free energy in some way or another to match people the same way that molecules actually pair in reality, it is a baseless algorithm.
Now they can choose their partners from wherever they are.
Military dating sites help you with a strong platform and bring many people with different personalities but similar thought processes to you.
By having singles send in saliva samples, the site facilitates a laboratory analysis of each person's immune system type and, using this data, claims to create optimized “physical chemistry” or "sexual chemistry" between people based on the sweaty T-shirt study, a pattern, discovered in 1995, which finds that people are most attracted to the smell of people who have the most-dissimilar immune system.
 The site was conceived by Holzle, a long-time internet site dater, after watching a TV discussion on the findings of the sweaty T-shirt study.