Link building is an good way in search engine optimization to get to position in SERP. This is an important factor for getting a high keyword position. Link popularity always help in getting number one position in the search engine.

1. Do not start linking into various domains hosted on same server or purchasing a series of links that were hosted on a single IP address. The best ways is comment on some good blogs(not spam)and you will get natural links.

2. Page rank quality of linking site also matters. Always get links form both high as well low page rank site. Article submission will help you to achieve this.

3. Keep in mind that link quality is important then link quantity and anchor text is more valuable then pagerank. So work on it.