The thing about communication via internet is that it gives one the illusion that you know someone. They may come across online as witty, or acerbic, naive, horny, intellectual, impulsive, earnest, whatever. You can get reams of written "information" about a person, find out where he/she lives, learn the family history, read their poetry. But it's all a construct, of course. One fills in the gaps (which are large) with all sorts of assumptions; assumptions you don't even realize you are making. Which is not to say that some truth doesn't come across. But it can't ever compare to sitting across from someone and looking them in the eye. And/or hearing the peculiar timbre of their voice. One look at a person's face, gestures, tells you so much, maybe some things you don't want to know.