Experienced SEO freelancer needed to secure backlinks via Web 2.0 sites. I need 500 backlinks per month coming from a combination of blogs, social media & article directories. I have list of web 2.0 sites I want to target. Also I will provide all [url removed, login to view] bidding please provide examples of COMPETITIVE keywords you've targeted at Google in the past. I would like to see proof of your experiences & abilities to get results in SEO.