The Net - robert
If you go down your friends' list on LJ it's basically people talking about things that happened lately, what they like or dislike, or posting pictures. I usually don't have time to spend half an hour or longer writing about everything I want to in several paragraphs. When I need to go into greater detail I will use my LJ but otherwise if I want to let friends and family know things that are going on I can do so in ten seconds with my FB. It's not exactly the same thing but a similar idea.