Too www. or not to www.?

[SEODinosaur]

what is the point of having www. in my URL? does this help, hurt, or influence anything?

[brandonjschwartz]

It doesn't matter one way or the other. You should pick one though.

[Copstead]

It doesn't matter for SEO, but I would recommend using www since you may have sub-domains in the future.

[ClassifiedsKing]

It matters depending on your audience and your off line marketing efforts.

The best is to use http://site.com because it avoids many potential problems. For example with 301 redirects. Also technically it makes sense, why the hell host your site on a subdomain, it should be in the root???

But we do use www. because our audience is an old and traditional audience, so they think a site with out www. is not even a site. So to maintain UX patterns we use www. But in future we will switch to the more sensical root domain.