Should one always use "www" as the prefix to one's official domain name? I will be launching an e-commerce website shortly and my attorney needs to know the official domain name of my site for copyright purposes. Are there any reasons why I should designate it as "www.example.com" as opposed to "example.com"? I've always used "example.com" during development because it was easier to type and I'd have Nginx rewrite all requests for "www.example.com" to "example.com". Should I perhaps say "www.example.com" is the official domain name and reconfigure Nginx to rewrite all requests to "example.com" to "www.example.com"?
Thanks!