Jeff,
 
I would only fit 2 of your 3 criteria (I don't have the POSIX developers
kit), but would still subscribe to the POSIX list because I am VERY
interested in keeping abreast of the nifty software (HTTP, LYNX, etc) that
POSIX makes available to the 3000.  And in picking up tips on using POSIX on
the 3000.
 
As I said in my earlier post, I don't think you can (or should) separate
POSIX from normal 3000 discussion.  The 3000 is simply no longer an MPE-only
machine.  And my guess is that there are a lot of people out there who, like
myself, have learned a lot of things about the capabilities that POSIX
brings to the 3000 from perusing the postings to this list.  And after all,
that's one of the main reasons for the existence of the list - sharing
knowledge about this great HP3000 platform.
 
Please don't separate POSIX into a separate list.
 
Gary