In response to CalBear's sticky thread, I thought that it might be more practical and considerate to try and gauge opinion on the subject. Are all evolutionary and geological PODs inherently ASB subjects? Because personally, I would be inclined to disagree with this assertion.
For instance, any POD with more severe or less severe epidemics than our own has to be deemed an evolutionary POD as well, and would according to your criteria also have to be relegated to the ASB forum, without exception. Any POD will lead to different genes being passed on to later generations, and thus, unless we believe that every conception and birth is predestined, every single ATL will unavoidably have some evolutionary divergence from OTL. It's unavoidable.
And geological butterflies are just as unavoidable, in exactly the same manner as weather butterflies. If a butterfly flaps its wings in Tokyo, the weather in New York will eventually be affected by it; and anyone takes a different footstep, then an ATL's tremors, earthquakes, volcanic eruptions, and perhaps even its climate, will eventually diverge from our own. It's not inherently ASB, any more than all of creation IOTL is; it's just logic, plain and simple.