When I first installed a blog several years ago, the URL for a new post would appear like "blog/?p=1234". I also noticed that when I viewed my AWstats statistics program in my hosting control panel, it wouldn't reveal the number of views for specific posts.
But when I installed a blog for another website recently, I noticed that the URL of the blog post contained the actual title name (not ?p=1234). More importantly, the specific blog posts show up in AWstats, so I would actually know how many view a post received (otherwise I wouldn't know).
So my question is: If I were to change how WordPress creates the URL for new posts, by default will it also change the URLs of the thousands of other blog posts I have already made? If the older post URLs changed, that would hurt me with Google plus social networking sites that already link to a specific URL. But I'm frustrated that I can't tell how many views my posts are getting.