Facebook has changed my life in what I can see a good way, chatting to my friends and seeing updates by photos from back home hours away. Not only that but my Dad who lives around the other side of the world who uses Facebook too is a great way to stay in communication not only by chat/text/photos. It is also a nice free way for me to text my Dad in Australia by using the Facebook app on my iPhone, and he the iPhone too to reply back to me.
The convenience of it all has been fantastic for me to be socialised with many people I care about, and see what people are up to. I agree I have people on my Facebook from time to time who I may not chat to often, but it is nice to see what they are up to (in a non-stalking kind of way

).