I used to work for a Swedish company with a system named "foo-ws," as in Foo Web Service. It's pronounced "foo vee ess." Because Swedish. IIRC, www is vee vee vee.
I can confirm. I mean, the "proper" pronunciation is dubbel-vee-dubbel-vee-dubbel-vee, but we can't be bothered to say all that so we just say vee-vee-vee.
I also think "double-v" is a better name for the letter w than "double-u" is.
I think I have also heard dub-dub-dub dot etc.