That's a broad spectrum, encompassing everything from the Chiefs stripper scandal to Aaron Smith's airport toilet tryst, incidents which provided the catalyst for the push for change we are now witnessing.
Serious sideline abuse of officials/players/coaches and acts of violence are other instances which may be reported.
Complaints are covered by the privacy act so are unlikely to be made public, unless those making them feel they have not been dealt with.
The challenge for NZR will be filtering through complaints that need immediate attention; those that may just be attention seeking, and those potentially seeking to settle a grudge.
In some cases, finding proof may prove difficult.
At the elite end, the national body also needs to prove it is capable of punishing its leading players, not just those on the fringe of the All Blacks.
When Smith was found to have lied to NZR during the second investigation into the airport incident he merely received a warning, largely because of his importance as the starting All Blacks halfback.
In the age of social media the complaints line is another signal to those in the public eye, especially those just entering it at a young age, that profile comes with intense scrutiny.
Professionalism embodies far more than simply performing on the field. The role model debate is a complex one but expectations around conduct are non-negotiable.
Step out of line, and those offended by such behaviour, whether it be on a moral or illegal level, are now being actively encouraged to act.
Even amateur rugby players need to be careful.
Court sessions remain commonplace among club teams, a means of bonding and/or celebrating. But should such activities spill into the public arena and team kits remains worn, the risk now appears greater that offensive behaviour will be reported.