Two Different Questions Here
 

My first question is: I have an idea and I researched keywords for that idea. The one I came up with there are only 3 listings with google for those keywords and on the same page there are about 8 sponsored ads. Would this be something that would work well as far as finding a product for that niche?

My second question is: I already have a blog with several products listed on it, plus I just recently submitted an article I wrote promoting a product. If I use like Submit-It-Easy that sends my stuff to millions of places with one click does this create backlinks for my blog and article?

Sorry to be so ignorant, but this can be very confusing. Thanks for any help.

If you're seeing 8 sponsored ads already means it's a highly competitive domain. On your second question, avoid using tools that do mass submissions. That method is outdated and can hurt your site.