By contrast, I found that my Facebook dump was extremely devoid of information. Sure, a few advertisers have my data (but much fewer than in the article, < 200!). Beyond that, the dump contains very little information that I didn’t explicitly provide to Facebook (such as Timeline posts, images, etc). At most it assigned a very broad category to me (“Established Adult Life” — OK, duh).

Of note, it did not contain any record of phone calls or SMS conversations I’ve had. This is probably because I didn’t give Facebook permission to collect this data, when asked.

Of course I’m under no illusion that this is the only data that Facebook has on me. Based on my (even sporadic) activity they must be able to infer lots more (and then there’s all that tracker data). They just don’t make the interesting bits downloadable.