Importance of Link Building
One of the factors search engines like Google use to rank keyword search results is the number of incoming links a web page has. The theory is that pages with a lot of incoming links, particularly from popular websites, must contain good content or no one would want to link to them. So pages with a lot of incoming links are likely to be ranked higher in keyword search results than pages with fewer incoming links.
Find out how many incoming links your blog has according to Google by typing link:www.yourblogname.com
into the search box on Google. On Yahoo! type linkdomain:www.yourblogname.com
into the search ...