Business/Entrepreneur/Marketing Blog & Social Media Commenter

I'm looking for a blog & social media commenter to comment on the major blogs and social media post in my sector.
You'll need to be passionate and educated about growing a business with above average knowledge on marketing, internet marketing, social media, hiring. Or if that is a stretch then one or two key areas of growing a business will be fine.

Your comments will be helpful, detailed and practical so that the readers get value.

At the end of the post you will leave my name and my website.

Can you please let me know how much you would charge for this per week, when you can start and provide some links, or attach some writing/comments you have made on the business/entrepreneur/marketing industries.

Thanks