A rapidly expanding social networking site has been slammed for its racist taunts against immigrants to Australia.

The Facebook Group, “F*** Off, We're Full”, has nearly 65,000 members and believes any immigrants coming to Australia must adapt to what it calls the ''Aussie lifestyle.''

"This idea of Australia being a multicultural community has served only to dilute our sovereignty and our national identity," the site states. "As Australians, we have our own culture, our own society, our own language and our own lifestyle."

The website is full of debate on its discussion board. The latest topics put up for comment include: Will Indian race-rioters be hunted down? All foreigners need to be euthanized?

Matt, an active member of the group, said he joined because he believed immigrants were ruining the Australian way of life.

He believed the Federal government's current immigration policies were too lenient. Female member Courtney said she recognised the site was racist but stood by its beliefs.

Murdoch University senior psychology lecturer Dr Anne Pedersen said the Facebook members were contradicting themselves.

Dr Pedersen believed shutting down the group would be pointless but said there was a limit to freedom of speech.

Facebook's Statement of Rights and Responsibilities states that any content that is ''unlawful, misleading, malicious or discriminatory'' could be shutdown.