How could i find out if there are enough sponsers or paid ads exist for a specific product or service. Before i start targeting a specific keyword, it must have a commercial aspect so that i may get the clicks. Kindly help me how to check that
Use Googles Adwords to see what people are prepared to pay per click. Also search on your chosen keywords and see if any adwords show up alongside the search results
adversiters pay for keywords not for products. you can use the google keyword tool to choose the right keyword.