NAP is an acronym for Name, Address and Phone number. Why is it important for your SEO? It’s what the search engines use in order to determine what sites to show for geo-targeted searches. Not only is NAP needed on your web site, but it should appear consistently the same across all of your online presence — that includes web, social and any online listings you may have. Having this consistency helps the search engines understand who you are, what you do, and how to direct users to find you.
Don’t confuse your users — or the search engines — on who you are and where you appear online. Think of it this way. You put a lot into your ‘branding’, right? So this is really the same thing. Make your NAP the branding for all of your online postings, whether on your site or perhaps on an article posted at another site. Search engines are smart and will connect all of your NAP dots.