Well, if you decided to point it out directly...kinda yeah, and I'm kinda sad.

But maybe it has something to do with my Steam page being publicly known here.

So no hard feelings...yet.
No need to be all mopey...I gave him a referral link, no information is exchanged doing that, they don't even tell ME who used it

and its a browser cookie, which I wiped right after use, the link no longer exists.
You should also realize, its your LACK of privacy with your OWN accounts that makes it so I would never add you as a friend.
You friend everyone you come across...I don't need that trail following me
EDIT:
I suppose you wouldn't know that one of the first and worst flaws in facebook was worms spreading through friends lists, the more you had, the worse it could be.
Now imagine the 80 million users who had some celebrity as a friend (if they were dumb enough to think they sent them a file--most are)
You could have probably taken the country offline with a properly planned cyber attack at the time...I should know, I was going to make a faux one just to prove that exact point.
Steam (so far) hasn't had that issue obviously, honestly I think CS:GO has a bigger security flaw somewhere in it, on top of likely the most malicious user base...none of this is fact, I just see way too much happening with it involved to even want to find out.
Anyways, I was just making a simple point and I'm rambling, the more unknown users on your list (I joined the lair 2 days ago does not make someone known--neither does supposedly having a twat lol), the more likely your going to find problems or at the least aggravation, neither of which I want to waste my energy on.
You like being extremely social, I don't...now in the same way, not spread across the entire web.
I've said it before and I'll say it again, I just happen to love this place...its really the only social site I'm truly involved in.