A news report I saw on this last night mentioned Facebook was claiming that because people's stuff may be, and often is, already saved by other friends etcetera, the new clause was the same thing. If your friend saved that im-bare-assing photo you posted when drunk, then you deleting it the next day has not got it off the web.
Is nothing sacred?
If you do not agree with anything I appear to do, I'll not only appear to stop doing it, but appear to deny under affirmation that I ever apparently did it. ~Roger Thelonious George 