Here is when to report users, to quote: You may report a user who is acting inappropriately or in breach of the PLAYSTATIONŽNetwork Terms of Service. If a user is not violating the Community Code of Conduct as set forth in the PLAYSTATIONŽNetwork Terms of Service, please do not register a complaint.
False reporting may result in a restriction or suspension of your PLAYSTATIONŽNetwork account(s). SCEA will process all complaints. SCEA does not disclose to individual users the status or results of individual complaints.
We want your experience of PlayStation to be easy and enjoyable at all times. But if you find someone is spoiling it for you, by cheating, harassing you, intimidating you or threatening you in one of our games with malicious or offensive behaviour, then we want to know about it.
I thought this had always been possible? I am sure, I complained over someone in Home like a year ago? But it's good that all people get to know about it, if someone missed it, as there are so many lamers about ruining it for everyone else!