As you know link building campaign is most cost effective when compared to other forms of advertising. For example if you are getting a link from PR6 website then you should have to pay a min 100$ per month.You have to afford a lot from this type of link building. The essence of quality link building network is to have as many websites as possible are linking to your website.Getting links from high quality pages are far better than getting tonns of scrap links.

Beware of Link building services who promise you some tonns of links within short time period. Link building is the slow going process. Google will definitely slap all those new born website who are getting some tonns of links with in short time period.And i can also say that almost 90% of link building services who promise 1000's of links in short period will provide almost all dummy links. Link building is not just the number of links you get,but those links which boosts your business website in major search search engine ranking positions. So always make sure you target of getting links to your website from high PR authority sites. This is the most important think which you have to study before hiring any link building services.