The Usenet groups we are interested in are in the rec.pets.cats domain (recreation.pets.cats). rec.pets.cats.community (RPCC) is a very special kind of group - members of this group essentially role play, playing the roles of thier cats. In addition, the general philosophy is that since cats are superior creatures, they don't feel the need to adhere to such silly human standards as grammar and spelling. Some posts in RPCC will use proper English, while most of them use MeowChat.
It's also important to observe that the people on RPCA and RPCC develop very strong personal attachments, and often come to view other members of their groups as family.These groups often form a major avenue for socializing for a lot of members.