[Mandatum]

A little offtopic, weird they chose to keep the URL at: www.domain.tld, domain.tld even redirects to www

[lotyrin]

http://www.yes-www.org/why-use-www/

Not that I have strong opinions on the matter, but this is the go-to resource for that side.

[RandomMaker]

It's done out of personal preference and for SEO.