One of the problems seems to be that teaching pilots to fly safely is seen as boring and it does not feed the egotistical needs of some. The UK has an exceptional level of safe helicopter pilot training, which is the result of sound knowledge, good instructional technique combined with a strong ethos of flight safety, what is being exported is in my opinion down right irresponsible. This is pure "look at me" flying which is paramount to teaching pilots to fly the helicopter outside of the procedures within the POH, as mentioned by topedtorque; what insures think of this type of training would be interesting. This does nothing other than increase the accident rates and increase your insurance costs.
I have been conducting training in Russia for many years and hear constantly how Russian pilots are being encouraged to ignore the HV diagram by a UK pilot.
Keep your RPM in the green
D