I've just added a WP blog to a website and I've noticed that the blog has a URL without the www. prefix. The problem is my main website has the www. prefix. I installed WP into a directory called 'Blog' with the main website in the root.
I'm worried that this could cause a duplicate content issue and I would like to know how to fix this. I don't mind having or not having the www. prefix, I just want them to be consistant across my website and blog.
Any advice would be great.