Link building is always considered important to gain traffic and rankings on Google search engine’s results page. In order to effectively accomplish this, one must adhere to following guidelines:

• Optimize link building with relevant optimized keywords
• Optimize links with targeted keywords (anchor text – quality traffic keys)
• Target link building relative to geographical locations
• Keep link exchange to a minimal amount
• Ensure that your site is linked to high traffic sites first and then go for PR
• Link structure of the site must be based on Optimized keywords which must match your industry along with the terms you target within that industry (for example: Fragrances – Perfumes – Dolce & Gabana)
• Navigational links must be optimized with Relevant keywords where most of the links get valued
• A strong internal link structure with optimized keywords will gain high traffic from relevant sources such as: blogs, social networks, news sites, marketing sites, local directories, Google Local Maps, Yahoo!, and MSN Local Business Listings which can build up quality links specially for e-commerce sites
• Getting 10 links from relevant sites that generate quality traffic is better than getting 100 links from irrelevant sites simply for the sake of traffic
• Time is of the essence in SEO Link Building; only target the area where your business is located rather than wasting time, effort and thousands on bulk directories

Hope this helps!