facebook is a cheap as chips, page-48

"Facebook currently archives your site if you dont use it or unsubscribe from it. Not sure why they retain your information.That takes alot of server space however and doesnt garnish any revenues."

For exactly the same reason Facebook was put there there in the first place once you take the smoke & mirrors away. Primarily FB is data mining platform, you only have to look at the setup that funded & pushed Facebook to where it is today. Anyone noticed how extremely difficult (even possible?) it is to remove yourself ?