Number of people on my lj friends list: 64 in total, of whom 54 are real people. But they don't all actually post journals - some of them just have accounts to read with.
...whom I've met in person: 47.
...whom I've met in person more than once: counting the whole BiCon and alt.polycon weekends as "once" because they're single occasions, 37.
...whose house I've been to: very few, actually. 16, and one of them shares the same house as me.
...who have been to my house: 13.
...whose precise geographic location I know offhand: I know what town or city all of the British people are in, and I know at least what state all but 2 of the Americans are in. I don't know very many people's home address, but then I don't send postal mail to very many people (why bother, when they have email?).
...whose full names I know offhand: Full name including middle names, or just first and surname? Hmmm. I know first name & surname for all except 8, but I only know full name including middle names for 7 or 8 (depending on whether or not I can remember one properly!).
...whom I've followed/been in touch with for more than 3 years: only 9.
...who live outside my country: 18. And those 18 all live in the US.
...whose journal I consider myself "addicted" to: erm... I can't answer questions like that!
...whom I've lived with: 1 officially. Another 1 lived in the same building as me in first year, but not actually in the same hall of residence because the building was split into different halls for some reason. That's all.
...whose ex I slept with: um... I don't think I go in for sleeping with people's exes! None that I know of.
...who I'd do: oh bloody hell, who wrote this thing? about 12 or 13 of them, ish.
...who I've done: 2 by one definition, 4 by another.
...who I'd do but haven't yet: do you want names?