Can I install Mint on a domain and track all the subdomains as well?
Yes, just include the Mint JavaScript include on any page you want tracked by Mint. Remember that the src attribute of a script (or image tag) acts just like the href attribute of a link—if the resource being referenced isn’t on the local domain you need to include the full URL, eg. instead of just /mint/?js use http://yourdomain.com/mint/?js.