zone files and named.conf

[James Simons]

I found out yesterday (by accident) that multiple domains in named.conf 
can reference the same zone file.  So I got to thinking that this would 
be a good way to reduce overall maintenance of zone files for me.  We 
have .com, .net, .org, etc addresses for several of our domains and I do 
hate to have multiple zone files to maintain for each one, so I thought 
that I would put a reference to each one in named.conf and when I 
specify the zone file just point it to the .com and go on with life.  I 
wasn't sure how good this was for the overall DNS of the net but I knew 
you guys would so please let me know!  

Thanks

James Simons

ps If anyone knows of a good resource out there with firections for 
setting up a virtual hosting web server including SSL please let me know,.