no... you can put in a fake one if you want. Even if it was required its private. Sony would never sell your address. It's only recommended that you use a real address only for special offers like if you won a tournament and got a cash prize, they would know who to send it to and where. Besides, you never have to use a real address for anything online unless its billing infomation, etc which Sony does not use for the PS3. Also, unlike Microsoft, Sony's information with your profile is ALWAYS classified.
Hey i've been thinking for a while now. Should I create a Lucario/Riolu group for the Pokemon Groups section for the Social Group? I wanted to for a long time but I don't know how active it will be and if it will get enough people.