Speeddating proposals are not for serious dating, and behavioural recommender systems or other system that learns your preferences are also useless at all.
MatchMatrix is a HOAX based solely on "modified" Biorhythms.
True and PerfectMatch failed because they were scientific frauds, the same for Be2 and Parship (eCift in Turkey).
SinglesBee also failed, it was the free version of True.
Basisnote, GenePartner, ScientificMatch and DNA matching methods in general are HOAXES.
Online dating sites can not abandon the attracting, converting and retaining marketing stages; the automatic renewal of their members's subscriptions with dirty credit-card billing trickery, due to high acquisition costs.
Social networks are for meeting the people you know in advance, not for meeting new people or make new friends for serious dating.
"Social dating" proposals from Badoo, Zoosk, HowAboutWe, Yangutu, Mamboo, TheCompleteMe, Twoo and others are vaporware, from instant gratifications, for flirting, not for serious daters.
had published an outstanding paper "Traces of Deception in Online Dating Profiles".
to part 3