I have noticed that some blogs resolve to http://blogname.whatever and other resolve to http://www.blogname.whatever dependent upon the address placed in the URI wordpress address/blog address field in the options panel. My personal preference is for the latter. However in my default installation both are set to the former. Is it ok to change these to the latter or will doing so affect anything such as RSS syndications for example? BTW pardon my ignorance but why URI instead of URL?