Computer techJunkie newsletter writing

I am looking for someone who has experience in writing newsletter and articles in English especially in computer/technology product areas (examples: nettops, mini-pc.) I can you give the keywords for the articles and newsletter. I need the newsletter / articles with the proof of the subject and can write within 24~48 hour turnaround period. Article criteria: -- 500 to 750 essay word P/R & newsletter articles -- No spelling and grammar mistakes -- Proper grammar must be used -- Use conversational American English -- Ability to absorb feedback, and effectively track and apply edits -- Articles must be at least 60% unique from original articles. And must pass copyscape -- Keyword density of 2% - 4% using provided keyword Writer criteria: -- Professional creative / eye catching in the first paragraph (Tech Junkie) article writer -- Very skilled in researching, and extremely familiar and passionate about Mini-PC and technology -- Native English speaker -- Committed writer (will complete projects properly and on time) -- Able to write on various topics (Topics Mostly Cover on Mini-PC applied in Education, Health, Retail related Field) -- Experience with writing consumer audience and/or the Internet space and SEO article -- Easily communicated on MSN/Gtalk Following two topics are needed Tell us about Digital Signage in Education Field 450~600 words Tell us about Digital Signage in Health Field - 450~600 words If article is good, project may be long term later on. Offering $20 for both topic completed. Timeframe for this bid ends on Sunday Afternoon Pacific Standard Time.