This was also a huge obnoxious issue when I think GitHub was offering some kind of promotional T-shirt for a certain number of open source related pull requests

This was also a huge obnoxious issue when I think GitHub was offering some kind of promotional T-shirt for a certain number of open source related pull requests. There needs to be a way to setup a filter that auto denies comment only based PRs, unless it comes from a dev with a certain minimum "reputation / contribution" threshold score.