Email address harversters?

I haven't been able to keep up with this group for awhile but need
to ask anyway:

Is there any reason to be concerned about spammers 'harvesting'
email addresses from WWW archives? Any good defenses?

Thanks!

--Paul T.


-- 
Windows95 (noun): 32 bit extensions and a graphical shell for a 16 bit
patch to an 8 bit operating system originally coded for a 4 bit
microprocessor, written by a 2 bit company, that can't stand 1 bit of
competition.