It is good that people are warned about this, but I would just add the name of the profile in the subject.
That seems a bit easier and more clear for the people over here.
Yes it is good. However there are no backup info regarding the scam event that OP described. It's quite hard to call the user a scammer or even tagged him for being a scammer. This is a scam accusation thread and no evidence that pointing out to the user is clearly an allegation.
There is also a chance that the accused are not aware with this and might OP is trying to pull him down. Who knows, the details posted here are not sufficient enough.
If OP didn't provide additional info then consier this as nothing.