Server Reponses
404 Server Response: SEO Basics
Importance
Why is it important for your server to respond with a 404 header code when the page is "not found"? It is important because SE rely on those header codes to direct the crawling and reindexing of pages. If your site doesn't respond properly it may affect the crawling and indexing of your site. Specially important for news sites and sites that rotate their content at a fast pace.
