By Kirk Miller We’ve been tracking what Facebook has been doing with all the personal data it’s been harvesting for a few years now. But instead of looking at the social media giant as something evil, perhaps we need to reassess: They aren’t even sure what they’re doing with all this information. That’s the conclusion reached by Motherboard after it published a leaked internal memo written by Facebook privacy engineers. Titled “ABP Privacy Infra, Long Range Investments,” the document shares several concerns faced by the company, particularly after the EU and India enacted regulatory changes. “…