I think market segmentation is the way to go, gets you greatest results.  Came across a tutorial by ccmusicman ( [url]https://my.wealthyaffiliate.com/share_zone/view/637[/url]) that's been around for over 1 year and a half but has got only 700+ views yet it has one great idea.  Read it, it's easy and clever and, above all, it will get you results galore.