Responsive web design. RWD. You know, when your site looks great on your desktop, tablet AND mobile device. It’s important, for sure. Your viewers are using a variety of devices to view your site (check out your sessions by device in Google Analytics). And Google’s algorithm gives priority to websites that display well on smartphones and other mobile devices. So how do you know what your site actually looks like on all those devices?
Any time you change a permalink on a page or post, you should make sure users can still get to the page with the old link. Luckily there are a bunch of great redirection plugins that can do this for you. Read more about why and how to use them.