Like it has been said, success isn't the key to hapiness but hapines the key to success. If you love what you are doing,you will successful
@jvmaster Thank you for the poetic answer We are not talking about happiness and success here. The topic is popular IM niche Anyways, I agree you must have passion for your business.
Adult niche is by far the most profitable, but it is very hard to get through. Most others are already mentioned here...
pick a niche and learn everything you can - then create content and you will be in the most profitable marketing niche
I think we need to think outside the box a little bit more these days. I really like using Amazon and the google keyword tool to target keywords and niches. Sometimes I sit down and do research and by the end of it my head is spinning with new ideas. It's one of the most fun parts about being an internet entrepreneur...we're idea people. That being said, it really doesn't matter what your niche is if you can prove that their is a need for information in response to problem within it. Use the tools available to us and get thinking. The niche comes before the product, not the other way around.
you should definitely use google adwords tool. Try to find a keyword that you are passionate about and that you can promote and market well.