Content/Articles for website. Long term commitment

We have a few new websites and we need flawless English writers only. - They should provide Content with perfect grammar/spelling/structure. Content must be non-plagiarized. Content must be researched well based on keywords we will provide. Content must be copyrighted to us when paid. - Payment will be done through GAF escrow and non-disclosure agreement must be signed prior to starting. We are willing to pay $2 for articles with NO LESS than 400 words to start and will pay more if satisfied with quality and quantity. Please do now waste our time if you do not meet our quality and quantity requirements. The initial phase will contain almost 100 articles and we expect a load of at 3-5 articles per day afterwards which should be submitted daily or every other day. - We will provide keywords for the initial batch of articles when buyer is chosen. - A long term commitment of 6 months or more is highly preferred.