Generally, this means your website will get ranked for irrelevant keywords that will not help your business. (postali.com)
Eliminate waste in your AdWords or other pay - per - click marketing campaigns by identifying irrelevant keywords that could burn through your budget — before they cost you money. (wordstream.com)
Next, you can either manually search through the list, or you can export them all, remove irrelevant keywords, and then add them to the list of keywords you already found in Google's Keyword Tool. (blog.kissmetrics.com)