I noticed this a lot with the regional languages. For example searchig for a simple word 'bhabhi' (this means brother's wife) returns a whole lot of erotic stories instead of the meaning of it or its usage etc. Looks like Google does not downrank regional porn/erotica sites.
Maybe porn is more popular in India? I mean, the US state with highest porn subscriptions is Utah, which is also the most religiously conservative, and India's even more so.
