Sorry isn't that bribing them to behave bumdrop?
To me, it's seems a but odd to say (for example) I don't want you to hit x in a stern voice. If you stop hitting x I will give you a treat.
If there are no actual consequences for behaviour then surely it will continue? If you have to bribe with a treat to not hit, or whatever the issue is, what is that teaching?
My DCs were born before super nanny was around but I certainley made sure there was consequences for behaviour, including time out, thinking time, having to apologise, losing a toy.
They have excellent self esteem thanks, all happy teenagers doing extremely well at school, good manners, and know in life you have to follow certain rules.
Being nice to your children IMHO does not mean they will grow up to be nice to everyone, it means they grow up thinking rules do not apply to them and they can do as they please.
These are the children who get a huge shock when they go to school and are expected to behave in a certain way, else there will be consequences.
IME these are also the children whos mothers are in and out of the school complaining how their PFB was treated, how terrible and heartbreaking it was for x to be punished.