A group of English-speaking gamers have compiled a phrasebook for chatting online with Chinese gold farmers, including phrases like "Would you like to join my group?" and "please do not steal my mobs."
jia you – GO GO GO! (Use as a cheer)
ni kan! – look!
Pao! – Run!
Deng yi xia. – Wait a moment.
Ni xian zou. – You go first.
bu yao sha ta – dont kill him/her/it
bu yao sha wo – don't kill me
(Thanks, Nick!)