One thing though that Google won’t tell us is the mood of the searcher. Therefore, we will need to use our own judgment to determine if searchers are in a buying mood, meaning they’re likely to click Adsense ads or affiliate ads, buy products or sign up for lists, or just randomly surfing, meaning they’re unlikely to take a buying related action. We want to make sure that we bear this in mind when selecting keywords to target.LINK....

Another thing to remember is that not every keyword pick is is winner. Some won’t produce enough traffic and others won’t produce enough clicks or conversions. That’s just the way things are sometimes. That’s why it’s important to have multiple sites and to target multiple keywords per site to help improve our chances of having a winning, cash earning, niche site. And why it’s important not the obsess over a single site but to build several sites.