Take a gentle stroll through the Wild Windy Woods and you'll soon come across several different spellings of website, Web site, web site, web-site, etc. There seems to be little consistency. Even a quick search of the W3C's own site shows that seemingly even they can't agree on its use.
Presumably WWW is a proper noun, so surely the 'w' should be capitalized (ie Web site or Website), but many people seem to prefer lower case (ie website, or some even web site).
As regards the space, just as I wouldn't use Webserver/webserver, Webpage/webpage, Webhost/webhost, etc, so I feel a bit uncomfortable about using Website/website.
You may well ask, "Does it really matter?". Well, I tend to think that in a world where standards are important then it does matter. Whilst it may not be as important as conforming to code standards, I think the use of this word should at least be consistent on pages throughout any given Web site (or should that be website, ... ?). Groan.
Anyway, you get the picture. I think correct spelling of words and consistency on Web pages is important. So, what do you think (ie other than that perhaps I'm being overly pedantic)?