Facebook – If I delete the Facebook account, what happens to messages I’ve sent to the friends

Check out this article for full details: http://news.cnet.com/8301-27080_3-20005556-245.html. Long story short they delete all of the data that can identify you when you delete your account. They do keep other data so they can track bugs but they are rather unclear about what that means.

Here is the important excerpt:

What happens to my data after I delete my account?

According to this Facebook Help Center page all personally identifiable information associated with your account will be purged from Facebook's database if you choose to permanently delete the account. "This includes information like your name, e-mail address, mailing address, and IM screen name," the site says. "Copies of some material (photos, notes, etc.) may remain in our servers for technical reasons, but this material is disassociated from any personal identifiers and completely inaccessible to other users. Facebook also does not use content associated with accounts that have been deactivated or deleted."

I asked a Facebook spokesman why copies would need to be kept at all and for how long, exactly when all traces of the data are gone entirely, and whether any data remain on any servers of partners, and if so for how long? Here is his reply:

When a photo or video is deleted, or when a person deletes his or her account, we quickly delete all of the metadata for the photo as well as any and all tagging and linking information. For all practical purposes, the photo no longer exists, and we wouldn't be able find it if we were asked or even compelled to do so. This is similar to what happens when you delete information from the hard drive of your computer. Technically, the bits that make up the photo persist somewhere, but, again, the photo is impossible to find. It's possible that someone who previously had access to a photo and saved the direct URL from our content delivery network partner (this is different from the Facebook URL) could still access the photo. However, again, the person would have to know the URL, and the photo only exists in the CDN's (content delivery network's) cache for a limited amount of time.

To unlink a network in Klout you have to:

• Log in to Klout
• Click the Gears icon
• Select Connect Networks
• Click the Unlink link next to the network you want to delete e.g. Facebook

This only stops Klout from collecting any further data from that network. It appears there is no way through the website to remove the data that has previously been collected.

According to a few Klout support articles, like this one, the best way to get a definitive answer is to email them directly with your request.