Communications in the modern world

It is well known in academia that the only way to find out what your colleague in the office next door is up to is to accidentally come across a poster by him or her at a meeting neither of you would normally plan to attend.
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?