It's all about selecting the Best Focused well circulated publications online/offline for particular Niches and placing those Smart well written tiny Ad that Pre-Sell.

Craigslist is just one good example and if you read some of Gordon's recent Chattel posts...

Buyers and Sellers are Doing just Great!

There are many other very Focused Niche classified publications that work as well as Craiglist...

Again Focused Niche classifieds.

Sell Fire engines and trucks to Buyers in Fire Department publications...

Sell Ford mustang vehicles to Buyers in Ford mustang vehicles publications...

Apply the same to any Niche...

Whether it's comic books, fine china, autographed sports cards, antique pocket watches, Barbie dolls or Whatever!

Exactly like Google Adwords...

We Now live in a very Keyword Focused world.

Phil