Communications in the modern world
This can even on occasion lead to actual conversation over coffee, beer or dinner leading to fruitful cross-fertilization and increased productivity; but lets not get too carried away.
It has been the case for a long time, that the only way to actually communicate with someone in the same building requires e-mail; particularly if it is someone you have a working relationship with.
But I have to say, that blogs are a singularly satisfying way to communicate with one's own students...
I think I'll have to start dropping cryptic hints for class... ;-)
Well, ok, only for the advanced classes.
PS - you did submit that paper, right?