You are right - but I think there is a difference in that omitting http:// doesn't break so many things.
Try this link: http://www.news.ycombinator.com for example - this is what happens to most addresses not prefixed with www. This means that hiding the www. would mean waiting to work out that the site doesn't exist (or the connection is down) before trying the non www. version, and worse that you would get the wrong site if www.foo.com and foo.com were distinct. Hiding the http:// doesn't have such massive implementation issues.
Right. My point was supposed to be that the average user doesn't know about these implications. And since it actually makes a difference in what page is viewed, don't hide the www. from them. Sorry if I wasn't too clear.
Try this link: http://www.news.ycombinator.com for example - this is what happens to most addresses not prefixed with www. This means that hiding the www. would mean waiting to work out that the site doesn't exist (or the connection is down) before trying the non www. version, and worse that you would get the wrong site if www.foo.com and foo.com were distinct. Hiding the http:// doesn't have such massive implementation issues.