A site that wants to sell you something by sending you repeated emails is usually a credible site. This is a false statement.
It is important that we gather or collect first credible sources before we arrrive to the evaluation of their content in order to save up time. Also, we are able to compare the contents of many sources to be able to properly sort them out depending on their relevance to the issue.
By checking for opinions, and grammar errors. If the website has those 2 things it is not credible. Also, most .com websites aren't credible if those 2 things are on them. If the website is free of errors or opinions, and it does not look biased, the site you have is credible.
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