Suppose, I have created a 301 redirect in my site. So, how long do I have to keep it in order to keep my ranking same as before?

How can I attract more and more advertisers to my site? So, I can make more money. I am not saying that I am doing it for the first time. I already have a few advertisers and I have got a pretty decent traffic with ascending rate.

SEO Yoast plugin is creating a problem for my keyword count. It is kept on saying that I don't have enough keyword in the first para and meta description. But what I am seeing that there are already plenty and if I add more then it will get keyword stuffed. What should I do??

What is the number of outbound links from one post suppose if has 1000 words in it? So,that the links should look all natural to the search engines and not led to any manual action penalty.

What are the basic elements to make a site only for Amazon products?

Does the private blog networks still work in 2016?

How to target the right kind of audience if Facebook? All I see is that a whole bunch of random mass. How to effectively filter them?

If I want to start a forum. Then what are the basic steps that I should follow to make it grow? I know that forum communities are a lot different from blogs and they are pretty tough to get traffic to them. But every forum starts from scratch first, right? So what should I do?

In my site I sale some of my personal products. In the checkout page I am getting most of the users exiting my site. So I showed to an expert. He told me that the scrolling down action on that page is responsible for all the exits. As users if have any error they have to fill the entire form from top to bottom by scrolling down. Here is the problem I really need users to fill the entire form. How should I resolve the matter here? Please help me with your valuable suggestions.

Which are the most effective positions of a site that can get most sales for the affiliate products?
Any kind of suggestion will be helpful.