Source:
http://news.bbc.co.uk/2/hi/uk_news/8060407.stm
User photographs can still be found on many social networking sites even after people have deleted them, Cambridge University researchers have said.
They put photos on 16 popular websites - noting the web addresses where the images were stored - and deleted them.
The team said it was able to find them on seven sites - including Facebook - using the direct addresses, even after the photos appeared to have gone.
Facebook says deleted photos are removed from its servers "immediately".
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