50 articles needed on various subjects

I need 50 original articles on various subjects: IT, lifestyle, culture & etiquette, travel, food, business management, arts & entertainment etc. Will provide the list to potential candidates to choose topics. Since my site have global readers, I would need topics to cover different parts of the world, predominantly China, Asia, Europe and America. But will consider interesting topis from other countries. I will choose a few writers to cover different topics. Please let me know your rate and areas of expertise. The article will be in English and about 500-600 words long. Please attach samples. I am running an articl submission page for my web-site. In order to kick off, I will need writers to be named on the website. If you do not want to be named, please do not bid. Many thanks.