Click Here:
https://account.sonyentertainmentnet...billing.action

Log In.
Click on "Media And Devices"

there should be 4 boxes on the right side of the screen, one for video, music, game, and comics.

Odds are if you used to be a heavy game sharer like me. It will say "Game : 5 activated systems"

click on it, click "Deactivate All"

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Now just log back into your PS3, Sign into the PSN, Account management, Activate PS3, And you are good to go! all your content is back in your possessions with nobody else allowed to use it.

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Now I feel great, I would let people into my accounts under the condition that they redeemed a 20 USD or 50 USD psn card on it, I dont even talk to any of them anymore and here I am with all this content to myself.