Cell phone SIM card question

[Burno]

I recently purchased a new cell phone and am planning on selling my old one on ebay. My old phone has a SIM card without anything on it of value to me, so I planned on including it. I'm pretty ignorant when it comes to these SIM cards, but I do know they are partially used to identify you. Is there any risk including the SIM card with the phone when I sell it?

Thanks,


Burno