Learning means excitement for your brain; think of it as a data party. Be careful not to include links within content that lead directly to the desktop or mobile version of a page. Even if the user will be switched to the correct URL based on their device, Google sees these types of links as a bad user experience. When displayed in search results, URL extensions are usually meaningless and distracting to users so more human-readable URLs without extensions should be preferred. Font size “zero” for text or white text on a white background are also considered keyword stuffing, but are now reliably unmasked by search engine robots. Backlinks from older websites may be worth more than links from newer sites.