If you are building niche sites or any site for that matter, you need to determine how hard it will be to rank in the top SERP(Search Engine Results Page) position on Google.What you will need: Firefox web browser SEOquake plugin for FirefoxYou can probably use other tools for this but I like these. Using Firefox with the SEOquake plugin installed and turned on. Type your primary keyword into Google. For our example I am going to use "amazon webstore review". Do not put the quotes around it.