Real-life friend? If I know that you have a LiveJournal and I haven't added you, chances are I'm not planning on it. Don't take offense, I've just learned the hard way that I have to be picky about who reads this thing.
Fandom friend, random lurker, or somewhere in-between? If you really want to hear about my oh-so-exciting life, comment, and if your journal looks legit, I'll probably add you back.