"I already know an awful lot of people and until one of them dies I couldn't possibly meet anyone else."
-- Audrey Hepburn, as Regina Lampert in Charade(1963)
I can be reached by email several different ways, for different reasons.  
That doesn't mean that I particularly want to hear from you unless
I've been in touch with you in some other context...
-  eichin@thok.org 
-  also for personal or other business mail.
This is my home machine, and I usually check mail continuously.
-  eichin@mit.edu 
-  
is mostly a spam bucket at this time; I read it anywhere from weekly
to monthly, so don't expect a prompt response.
I have had numerous other addresses at other times, some of which
forward, some of which don't.