I am trying to build a free software (open source), so I guess what you are suggesting is another company in itself. For obvious reasons I cannot attempt to do

I am trying to build a free software (open source), so I guess what you are suggesting is another company in itself. For obvious reasons I cannot attempt to do that while trying to build a utility tool. Where will I get ads from? Google obviously. I will still have to pay for the margin. Search business works on volume, I am not sure whether the tool will be that useful that it will attract that kind of volume to get supported through ads. I think I am not putting it correctly in words but its not possible to do what you're suggesting.