A back link is a link that point to a particular web page. They can be
internal links (links from your own site) or external links (links from
sites other than your own). Checking back links means examining which
sites are linking to your site's pages. In Google this can be done
through Google Webmaster Tools or by performing the following command in a
Google search bar:
link:www.yoursitehere.com
It should be noted that when checking back links in Google using this
command only shows a sample of links to your site. Google claims
to be aware of all of the back links to your site, but only reports on a
select few.
