How would creating apache virtual hosts on the fly effect if any SEO
basically i can add directories:
/home/sites/domain1.com
/home/sites/domain2.com
etc
and it will work automatically 
www.domain1.com domain1.com, without adding an apache entry for each domain.
	Code:
	VirtualHost 206.4.112.13>
  UseCanonicalName Off
  ServerAlias www.*
  DocumentRoot /home/sites/
  VirtualDocumentRoot /home/sites/%2+
  <Directory "">
    Options ALL -Indexes
    AllowOverride ALL
  </Directory>
</VirtualHost>
<VirtualHost 206.4.112.13>
  UseCanonicalName Off
  ServerAlias *
  DocumentRoot /home/sites/
  VirtualDocumentRoot /home/sites/%0
  <Directory "">
    Options ALL -Indexes
    AllowOverride ALL
  </Directory>
</VirtualHost>
 Question is will it have any effect vs each entry for each domain.