When choosing a micro-niche for your ecommerce store, there are several practical factors to consider. Three of these factors (which we'll call the 'Big 3') are do-or-die factors that are absolutely critical to your success. Then there are a handful of other factors you should also consider before deciding on a product line.

Success in ecommerce is largely driven by the principles of supply and demand. But it's critical to understand how to measure 'supply' and how to measure 'demand.' There are many factors to consider, and they go well beyond simply comparing the number of retailers to the number of shoppers.

Before you can attempt to choose which keyword phrases to go after for your ecommerce store, it's important to learn how keyword searching works at Google and other search engines. This article covers some basic principles about search phrases, or keyword phrases.

Once you have chosen which product line you want to sell, the next step is to choose a couple of keyword phrases you want to get ranked for. The best keyword phrases are those with a high 'Market Opportunity Score', a high number of daily searches, and a high intent to buy.

The MOS of a keyword phrase is absolutely critical. It basically tells you how challenging it will be for you to break into the top 10 in Google for that phrase. If you don't rank in the top 10, you won't get any visitors to your site, regardless of the search phrase's daily search volume.

Coach's Keyword Tool calculates the 'Market Opportunity Score' for any keyword phrase, telling you how easy it will be to outrank the sites that currently rank in the top 10 in Google for that phrase. This article gives an overview of how the Keyword Tool calculates the MOS and what factors it looks at.

Read this article to learn how to do a Google Analytics test to verify the search volume a specific keyword phrase is getting.

If you're struggling to think of keyword ideas to type into Coach's Keyword Tool, check out this list of hundreds and hundreds of product lines.