Would it surprise you to learn that Facebook's "Download your Data" doesn't?

Among the information not included:

• information Facebook collects about your browsing history
• information Facebook collects about the apps you visit and your activity within those apps
• the advertisers who uploaded your contact information to Facebook more than two months earlier
• ads that you interacted with more than two months prior

Download Your Data is particularly spotty when it comes to the information Facebook taps to display ads.

In other words, it's the stuff that Facebook considers 'yours' rather than Facebook's: media you created or uploaded to Facebook and a few select things beyond this that it's OK with you knowing about.