I think there soon will be many such initiatives
Check out @howo for example, I think he runs a downvote trail

EDIT: He created and maintains a tool that allows everyone to easily trail the downvotes of others here https://downvotecontrol.com

Downvotes are a very healthy part of the ecosystem and act as a check and balance to keep post rewards honest. People who are unable or unwilling to directly participate in downvoting are strongly encouraged to use one of these new services.