In P2P systems, a beginner is likely to receive unwelcoming treatment sometimes.

I read an article at following link which suggests that P2P systems / blockchain heavily relies on TRUST between it's members. Due to high possibility of scamming it becomes necessary to make new joiners realise the value of trust. That's where existing members may have to take firm stand on the way newbies behave.

http://www.livemint.com/Opinion/w7t2USNQs5Yh7WPPf9wxLP/Understanding-bitcoins-and-blockchain.html