No, just because you put out a newspaper birth announcement for your brand-new little baby, it doesn't mean there are going to be old-fashioned newsboys standing on every street corner barking the latest news.
It would be nice if a newspaper birth announcement bought you that kind of attention though. Of course, it's never going to make the front page (not unless you happen to have thousands of dollars lying around). But even if all you can afford are a few hundred dollars to bring your announcement to the papers, it can be a great and convenient way of getting word out to friends and family all around.
Actually, a tiny little newspaper birth announcement has been the way it's always been done for decades. Back then, no one had their own printers, of course; and the stores didn't indulge you with birth announcement cards you could fill in yourself. The newspaper birth announcement was how it was done. In fact, it's such a regular thing to do, they'll always ask you at the hospital even today if you want them to take care of the announcement for you. They have all information they need; they just send it to the newspaper, which will just put it in the Births section within the week. They are not written with any creative flourishes and there's no photo. But it is free.