DuckDuckGo Search Result Filtering for Original Software

It pains as developer when someone hosts my software and tells their reader that downloading software from my server could be dangerous and same software should be downloaded from other sources. It also pains me when they rank higher for my software, still my users and make money off them. Just because it is free software, it's open to abuse by these people. 

I made a thread on Duckduckgo on this topic. If you're interested in discussing the issue, feel free to post on the forum.