You use them to tag your site and then google, bing, yahoo etc. know where your site is physically based. It's great for a local business, as you can specify your location to search engines who will then return your pages in local search results. e.g. car insurance in macclesfield will bring up the local Swinton's branch in Macclesfield.
A geo tag is the method of associate a geographical location with web page content. The webmaster can insert exact geographic coordinates in the code controlled in a Meta tag which will tell search engines of an exact location.
A Geo tag is the method of associate a geographical location with web page content. The webmaster can insert exact geographic coordinates in the code controlled in a Meta tag which will tell search engines of an exact location.