Obviously the narrower the search, the fewer searches but a lower quantity will mean a higher quality as your website will more closely match their EXACT requirements.
Ranking well for short keywords is not a bad idea, but at the same time it may not work always. A person who is using long tail keyword such as "Canon power shot digital camera 2MP" has already done some research and may be evaluating the product price, merchants selling it, etc... and is more likely to purchase the product. Here are the simple strategies you can follow:
: Start with Google Keyword External. The first search is just using single words. For example for your market start with words like: seo, keyword, keywords, content and so on. It's very important to let the tool suggest related terms that people are searching. These terms are really the starting point of your search. The same method can be applied using Google Sktool. Choose one main keyword and then go to step 2.
: Perform a search on Google for that main keyword. The things that you need to pay attention are the general competition and title competition. These numbers play an important role in deciding if a keyword is worth targeting or not. So write this down: you’ll have to compare it with the data for the long tail keywords.
- Use the Wonder Wheel to see what other keywords people searched after the main keyword. Watch the competition and when you find something under 1 million or maximum 2 million you can go for it. Write it down.