I've looked at the sample excel sheet and I can definitely provide the 20 comments per week by every Friday. Researching your topics is quite reasonable and I am on twitter so I understand the symbols, linking, jargon, etc. My bid is for 1 week of comments.
I have been a professional, female attorney for several years with more than 10 years of writing experience. I write, edit, proof, and analyze complex issues on a daily basis. Based on my professional experience, I am extremely reliable and am an effective communicator.
Please let me know if you have any questions, thanks!