Hi, I hope you are doing great. I just came across your project stated that you are looking for a contributor who can help you publish your articles in Yahoo. I am here to inform you that I am a Yahoo contributor and I can help you with publishing your guest post in Yahoo. As I have helped many people getting there guest post/articles published in Huffington Post, Forbes as well but I work for Yahoo so that can be considered done.
If you are looking for a normal procedure which takes around 6-8 months will cost your around 5000$. Though if you want a fast tracked procedure, will cost you around 6000-8000$ and the article will be live in around 20-25 days maximum with a guarantee.
If you can please get back to me over the chat box, I can show you some of the articles I have published and can discuss further in order to get this started.
Thanks