It's one of those questions where the answer depends on how you feel that day -- if you're feeling sorry for yourself you can exclude people you haven't met in person or who you don't talk to frequently anymore, whereas if you're feeling good you'll count them. Some days I'd have none, but I'm in a good mood, so I have six friends.
We should all be so lucky as Riiya, who's having such an amazingly perfect day that a bunch of names she memorized from the phone book are now classified friends. (Unless there are strange drugs involved, one may presume the phone book memorization took place on lesser days.)