Again, objectivism is philosophy not theology and thus does not qualify for protection as a "devotion" or "church-like" subject. Platonism, Marxism, Realism and so on also do not qualify for the same reason.
Marxism is antithetical to Free Republic. It would be as welcome here as Wahabist devotionals.
Platonism and Realism are narrow philosophical concepts that don’t begin to approach the integrated ideological system of Objectivism. (FWIW, Objectivism is neither .) Comparing either to Objectivism is like comparing the concept of animism to Catholicism. Animism is a “feature” of primitive religions, not a viable religion or comprehensive ideology.
Objectivism on the other hand is arguably as comprehensive, integrated and dogmatic an ideology as is LDS (and at least as conservative). The only significant difference (other than success) is that it’s atheistic, and as far as you’ve re-explained, that’s the only factor in your decision to deny equal protection for Objectivist devotionals.
I’m not really concerned with that. As Bush said yesterday, you’re “the decider” in making the call, but please don’t misrepresent Objectivism with those unreasonable analogies in order to justify excluding Objectivism.