sessionID is the identification code for your usersession. It's how the renderosity server knows that it's you going to that specific link so it can apply whatever settings go with your user, or use whatever data is stored for your user. If someone else uses this same sessionID he/she could get access to your account. I think it's safest for the session to be assigned a new key every time after a user succesfully connected using the sessionID. This way u can never visit a page twice with the same sessionID. Dunno if renderosity does this though?

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