The product reaserch tool is a great Idea but it lacks functionality.I often get 75% back as a result no matter what the search and find that when I look at Adverts they are often for products non related to my search.
Also on the Demand pages we get results for UK, US, Canada and Austrailia.
I know it''s difficult to gather all info but there are many more marketplaces out there, why don't we get feedback on them?
Keep improving and you could be onto a winner eventually but it's a way off right now.