Latent Dirichlet Allocation (LDA) tool is really workable

Hey GUYS,

LDA (Latent Dirichlet Allocation) is really useful and workable ??? it really on Google algorithms ???

I had read not a lot about LDA but according to the articles I can really say that its works but i haven't tried yet.. SEOmoz is not for basic kids and contains big things..

my question is any of my SEO friend had used LDA and how it works ? and how it is so useful then other tools ? please do not paste the articles of SEOmoz

Thanks