Why? I don't use Facebook, but visiting people's profiles on social sites doesn't mean much on the other ones. Most of the people I look at on Twitter or Google+ have done something so brazenly spammish that I have to go to their profile to find the "report spam" link or whatever. These people aren't my friends, they're just people that spam me that I want to go away.
Well, imagine if you will you were stalking some person you kind of know but not very well, or someone who is an ex-whatever, etc...and that info gets out, and they know. It could spell disaster. Sure, it's entirely the person's fault for stalking in the first place, but the internet enables that so...
