I know very little about some of the people on my friends' list. Some people I know relatively well. I read your fic, or we have something else in common and we chat occasionally. Some of you I hardly know at all. Perhaps you lurk, for whatever reason. But you friended me and I thank you.
But here's a thought: why not take this opportunity to tell me a little something about yourself. Any old thing at all. Just so the next time I see your name I can say: "Ah, there's so and so...she likes spinach."
I'd love it if every single person who friended me would do this. Yes, even you people who I know really well. Then post this in your own journal./