Copy writer for 20 marketing related articles

I am looking for a copy writer who can write 20 marketing related articles of approximately 600 words each.
At the moment the article headings are as follows:

1. Online Advertising Glossary: understand the terminology
2. Online advertising; how the buyer is boss
3. Banner ad sizes and shapes explained
4. Five Ways to Supercharge Your Online Advertising
5. Important: It’s Not Where Your Banner Appears But Who You Reach
6. Banner ads are back and better than ever
7. Why Newspaper Advertising is the Ultimate Response Generator
8. Designing the Perfect Small Ad
9. What is a good quality score and why does Google care about it?
10. Why Series Advertising Always Pays
11. Pay Per Click Advertising: An Idiot's Guide
12. Eight Free Tools to Help Maximise Google AdWords
13. Top Tips for Writing Adwords
14. Broad Match vs Phrase Match
15. Pay Per Click Jargon Buster
16. Who says SEO is Better than Paid Search?
17. Why PPC is becoming the only way to Succeed on Google
18. Is a PPC Manager really worth paying for? Yes, the good ones are and here’s why…
19. Newspaper Advertising or Online Advertising? The Million $ Question
20. TBA