No.
I like to make a game of it, though I rarely use the information I gain as anything more than a fail safe just in case the stalk-ee tries to screw with me.
Having the knowledge that you have all the information and resources necessary to ruin someone if they screw with you is a great feeling.
I was date raped and black mailed by a boss once, so I secretly recorded all our interactions after, found his pregnant wife's email address, and... Well truth be told he got fired and I never had to use all the dirt I got on him... But I figured out where he lived, where his ex wife lived, where his parents lived and worked, where his wife went to school and worked, where his son went to school and lived, all the other girls he was fucking... I almost wish I'd made use of it all, but his slimy nature took care of the issue for me.
That's my favorite stalking story.