Yes, over in Steemit.chat, go to the #steemclears-linkdrop channel. You can say, briefly, what the issue is. But other than that, no discussion, just drop the link there. Here are their rules, taken from the pinned information on that channel:

#steemcleaners-linkdrop Rules

1. NO DISCUSSION!
2. This is for abuse links and supporting links!
3. Do not post more than 3 links reporting the same person. (unless they have high payouts)
4. Action taken is at the discretion of @steemcleaners
5. No links to personal disputes or content you disagree with

It's a constructive action that we can all take, right when we see an issue.