A community with shared history among members
The community may be intentionally or inadvertentlyoffputting to newcomers

Long-time members share a collective history that may be laden with jargon and/or strong norms
Group has a resistance to newcomers
Subgroups form within the larger community

Provide a "welcome area" where newcomers can be welcomed to the community and can learn the basics of community norms

Newcomers have a "safer" place to enter the community
Experience in the community and community norms can be gained with lessened fear of repercussion from longer-term members