En each modus y medium communicandi there are advantages and disadvantages.
Talking face-to-face : the best one, according to me : there is something that there is nowhere else : a real feedback ; you can touch and smell the other person, you can realmente see this person (not only a picture) ; you can really work or play together. I think this real feedback depends on the more-than-continuous communication (smile, hands, voice, clothes, etc.). In the others moda y media communicandi, there is not this continuity (eventually in chat and phone).
Chat : there is an interactivity, but not as real/strong as in talking face-to-face. But you cannot take time to think about what you will say. You get more reactive than reflexive (concentration for saying things well and coherently).
Forum : the interactivity is not as "fast" and apparent as in chat and talking face-to-face but can be much more structured, "deep" (not the same meaning as "deep" in face-to-face relation) : you can concentrate your attention (perceptivity, receptivity, conceptivity) much more (totally) into the meaning of the written message, being less influenced by the person. That's why many people, who don't like unstructured discussion, prefer the virtual discussion forums. In virtual discussions forums you cannot being interrupted by the other person. You can read and read again and again your message, correct it, change it, before posting it. It is less spontan but much more clear, coherent and structured.
TV : There is no exchange, so no communication. All simply. Nowadays there are too many stupidities.
Paper : No exchange but information can be as structured as in a forum (even if there are bad papers). Information depends on paper and not on electricity. I prefer reading material books than virtual books (actually I've never tried).
Epistulae : letters give a little interactivity but can be very deep (intim / private).
Intim book : Do you want me to read the yours ?
Blogs : I've never been interested in it
. Is there an interactivity like in forums ? But you can take time for writing it well.