This type of links describe if there is a link exchange between two websites. However, the search engines don’t see them as high value links as it builds false authority.
This warning alerts the browsers and the search engines that a page has been moved to another location. There are several methods to do this: 301 redirects or 302 redirects.
Regional Long Tail
This type of keyword includes a city or region, which is useful for companies offering services around the country.
Google can lift a penalty for a site and ask for reinclusion. However, it severely depends on the brand’s reputation of the site and the severity of the penalty, in order to get re-indexed on the search index.
This is the source, where the user came from.