Is there a way to prevent reverse IP lookups to keep competitors from finding other sites of yours on your server? I recall Glen Alsop talking about a method or service he used to do this, but I can't seem to find that post anymore.
You can assign different ip per website but you need to check first if your hosting company does indeed provide that.If yes then you have to pay extra few bucks on a monthly basis to assign different ips for your websites.