Facebook says it mistakenly let 5,000 developers gather information from people's profiles after a time limit on their rights had expired

If I had to put money on it... probably at least 60% of deleted/inactive accounts are cached on facebook servers and they regularly sell the info. I mean everyone knows the saying "If the product is free to use, that just means 'you' are the product. via Pocket https://ift.tt/2VFI6WO