Comment with scam?

It means you're helping scammers by posting that link.

5C4M pls.

I had someone post the same type of thing today so just did the usual report, block communications & delete comment. All you can do but sadly makes no difference because it's always on a dummy account.

Someone posted the same thing on my profile today. All I could do is report, block and delete the comment.
Hopefully Steam will find a way to fix this.