Try a dating website...seriously, with everyone in here at least somewhat familiar with psychometrics, we should know best the variables that are being measured (regardless of how subjective or unreliable that they might be
). One of the psychologists at UNT ( my alma mater) is on the patent for Match.com (Dr. Thomas Parsons) that designed the research and measurement parameters and algorithm for their matching program.
Intuitively, it makes sense, plug in the variables you deem attractive from your potential partner, variables about yourself and a written statement about yourself (it's the GRE all over again, minus the frivolous measuring shaded areas of a triangle in a square).