Tests aren't validated by anecdotes of how well the results appear to match individuals. It requires large samples and proper controls. The fact that you believe it is useful indicates how successfully it has been marketed.
When my job involved the purchase or contracting of various tests, I rejected any marketing that was supported by testimonials. I wanted to see the actual validation studies.
To each his own. I know a lot of people with extreme intelligence and awareness that aren't susceptible to Jedi-mind-trick marketing who find it pretty interesting.
