Facebook News Feed Code

I don't honestly know a lot about Facebook because I don't have an account.  However, after reading that article it was interesting to find out that someone could essentially be "stalking" you possibly and you might not even know it.  If someone is new to Facebook and does not have many followers sometimes their posts do not even come up for others to see.  Also, there are times when you don't even have to request them as friends which is interesting.  The creators of Facebook esentially have the power and can sort of controll what is being put out there and what is not.  Also, the more friends you have, the more clicking on your site, the higher priority your replies are for more people to see.  I was very intrigued by this information because I thought you could always see everyones posts, but as this little experiment showed, sometimes you may not show up at all to others...very odd and possibly scary.