why do you care? didn't you always say that most scripts that are publicly available can't rank on Google and you need to code your own if you want to get decent ranking?
and yeah, it's WP and I don't think that theme is publicly available, maybe in the past. it's the same onwer running all those porn lists, they have 100+.
BTW, these porn list sites are basically just a single pages and they are a perfect example of thin content site but for some reason G ranks them very high.