The Solution: Use the include tag to create a template for your page. This allows you to created shared headers, footers, or in-betweeners for your pages, where the content is all the same. Then you only have to update one file, and your new logo... or new copyright date, or new design will update on all your pages at once.
The above example demonstrates what you would put in your page to include a footer file. The file footer.php would then contain all the HTML (written normally) that you want to appear in the page footer.
<?php include 'footer.php'; ?>
Another Problem: This only works on PHP pages and all my pages are written in HTML. I'm listed in Google and can't change my page names now!
The Solution: It is possible to run PHP from an HTML page, if you follow this simple tutorial.