Hi People, It's my first SEO IM Project, specifically "Amazon Affiliate". I launched the site in November/2017 and Now I've 2 keywords ranking #0 "Snippet" and #1. the site made $400 in January, and $160 until now in February 9/2. All SEO done for this 2 Articles is basic on page SEO and expired Web 2.0s, they are easy keywords with high-buyer intent. Now, I want to save this positions from other competitors, what should I do? I read somewhere that building more links for an already ranking #1 article in Google is not a right movement. What should I do exactly?