definition of a "zombie" is: loged in only once,
homepage length 0, no writeups
after n months of inactivity, an attempt
is made to bring the zombie back to life with
sending an email to him and explaining what will
happen. If there is no reaction, m days later the
user is purged. (*)
No purge of nodes just because of inactivity (though
I still think 2 years is long enough).
(*) While first being in favour of this, I can very well
remember how I feel if I am "spammed" with email
from some "uninteresting site".
While I like the idea very much to try to bring back
monks (not thought of in my post), we cannot assume
everyone being as interested in this site as us.