How to find that how valuable niche is ? I just want to ask that I have selected a product to promote how i will find out that how many people are looking for it ?
use this tool https://adwords.google.com/select/KeywordToolExternal ..never disclose your keywords to anybody..
What a great piece of advice, never share your niche with anyone especially if you are making a killing on it.
that is the same link i was about to post- very handy now that overture has ceased supplying search data.