The question of where to promote your business depends on the audience you are promoting it to. A real estate agent, for example, would do well promoting his business in a local newspaper. The key is to figure out where your audience is when they might be thinking of the problem that you can solve. Might they be driving their car? Could they be browsing the web or perhaps they are already out shopping? Getting to know your target audience will help you form a strategy around where to promote your business. Don’t forget that you can use trial and error to establish what works best.