Post Panda lot of rankings factors have changed. Blog networks are gone and Over optimization can hurt your site. I recommend following:
Soft Anchor Text. Instead of “SEO Services” as Keyword all the time use SEO and Services and related terms. Also do deep linking.
Learn more from resources below. 1
Read the full story on:Top 10 Things for an effective SEO Strategy
Matt Cutts’ statement in March 2012 that Google would be rolling out an update against “overoptimised” websites, caused great turmoil within the SEO community. A few days later thousands of blogs were removed from Google’s index and Matt tweeted confirming that Google had started taking action against blog networks.
More Reading:Google’s Matt Cutts announced that Google is working on a search ranking penalty for sites that are “over-optimized” or “overly SEO’ed.
More Reading:Let’s face it, algorithm changes aren’t made because search engineers have nothing better to do with their time.