WWW resolve

[hameau]

I would Imagine that search engines are smart enough to not treat www as a seperate sub domain.

AFAIK, Google treats the bare domain name and the www subdomain as different things – which they are, of course.

In the olden days, G's Webmaster Tools used to ask which of the two you wanted to use as the canonical address, but that seems not to be the case now.

I used to add a 301 (Moved Permanently) redirect in the root htaccess file, but now I add a 301 redirect in the site's DNS zone (in both cases, redirecting from domain.tld to www.domain.tld). Originally, this was to avoid arriving at the hosting service generic landing page.

I am not an expert, nor do I go out of my way with SEO. If Webmaster Tools shows a healthy crawl history and all pages show up, that's good enough for me. ;-)