It has been  a barrier for many of us like yourself to be able to get the niches that will bring in more traffic within a short period. We have tried to use some of the tools that we think will help even those that will not really help. All these tools that are being used are the major tools that you have so far thought will really yield results. after getting hold and applying all these tools in all possible ways that you have thought will really help but it has finally come to no avail.  You are finally tired and not ready to continue but I will give links that will really make you change your mind and get started in the right way that will really help you. Below are the links that you will have to bookmark on computer for the daily reference:

Google Trends

Amazon Best Sellers

Yahoo Buzz

These are the three major sites that are updated on daily basis with products that have been searched on frequent occasions. Any product that is listed here is having great demand and that demand is what will be able to get you more traffic.