The best topic will be one where you can create unique and compelling content on a regular basis. If you want to earn via advertising, here are guidelines on how to select the best topic

1. Create a website on a topic where advertisers are plentiful and their bidding on ad systems such as Google Adwords or Yahoo Search Marketing. Instead of writing about your favorite squirrel (where hardly no advertisers are bidding for the space), write about the latest tech gadgets.

2. Write about a topic you are passionate about. Instead of writing about mesothelioma which is supposedly high paying but you know absolutely nothing about (and hence can only copy other site’s content and can make no more than 10 pages), write about what you know best. Or if you insist in writing about a topic you know nothing about, seek the help of writers or attract a community that wants to talk about the topic so you don’t have to worry about writing the content.

3. Think of a topic that attracts users looking for ways to spend money. A travel site works well because you will be attracting users who are looking to visit the place — and hence spend money on hotels, travel tours, airline tickets, travel accessories and luggages. A camera or electronics review site is also great because you are attracting visitors are looking to buy cameras or other electronics equipment. The more the visitor is inclined to spend money, the more the advertisers are willing to spend to reach them