The most valuable data is the per user purchase histories from before the time those were hidden by default.

Why is that "valuable"?

	▲	doctorpangloss 27 minutes ago \| parent \| next [-]
		they basically map out the paying audience for your game on Steam
	▲	NamlchakKhandro an hour ago \| parent \| prev [-]
		So we know how many hentai games you've bought