I got a possible proto-small religion feeling from SL4 discussions with Eliezer and SI folk back in the day. Any possible cultishness feeling was with a small c, that is not harmful to the participants accept for their bank balance, as in the use of the word cult in cult following. There isn't a good word for this type of organization, which is why it gets lumped in with Cults.

Less wrong is better than SL4 for this feeling anyway.