Pornography vs. Erotica is a false and worthless taxonomy.

Well, objectively, yes, but Google does have a categorization of spam vs. non-spam sites. Which, strictly speaking, is not pornography vs. erotica - but nonetheless I think it would be an interesting idea to see how the categorization worked out in practice.

As of this morning, the googlebot seems to think that people searching 'couples porn' are more intested in pictures of women felatiating dogs or copulating with horses than they would be in what we offer at Comstock Films.

That's one kinky bot!