The only thing you can say different between a face-to-face interaction and a interwebz interaction is that you can see the body language and tonality in the face-to-face. And so, get a much better conversation.

But, often, that is not true.
So many times we have conversations with people where they just drone on and on and on. We already know the body language, its the same as the last time.

But, if you have that convo on-line, you can have two of those conversations at the same time (or more) and get more actual interaction, and less sitting there board, thinking of a way to get out (maybe if i gnaw off my arm).

And really, anything and everything can eat up your time. That is why productive people keep their time ordered, and if needed, turn off distractions.