Building the site in combination with the contents of the http://www.toppayingwords.com/ database will ensure a greater participation in Google’s AdSense program.

If you choose a topic, you may think that you know at least a few people who are interested in this topic. But do you really know how many people are searching for it in Google and the other search engines? Well there is an easy way to find out. Head on over to the free keyword tool at Wordtracker and do a search for your topic.
So now it's your turn to go through each of your topics and see if they are searched by people or not.

An internet niche is simply a keyphrase that you type in the search engine boxes. The results that they give are all the webpages which have that keyphrase and belong to that Internet niche. The more that keyphrase is used in a webpage, the more it will be relevant to the search and higher it will rank in its positioning in the results given by the search engines.