i don't think it is an idea that will, by itself, sustain a dating site.  it is a good single facet, as things like this do help when pairing people, but it misses other facets that combine to make a good match.<p>i think that an interesting idea might be to combine hyper-personal data like this into a site that is more closed and private.  can't freely browse people and the data they submit, you only get algorithmically matched up to a handful of people per time period.<p>that would address one of the bigger issues with dating sites, i think, which is that people don't tend to get good matches because they don't feel comfortable putting their entire personality out on display to the internets-at-large.<p>just my $0.02, though.  wanted to give some kind of input since you were having trouble getting some before.