A chain developed with Substrate can at different points in its lifetime assume one of three states: an independent chain with a secured bridge, a parachain, or a parathread. (source)
Subsocial is planning to be a parachain of Kusama, if that is successful then we will consider also launching a parachain for Polkadot but provide no guarantee that will happen.
If Subsocial is unsuccessful in launching a parachain, it will consider launching instead as a parathread. In that case, no tokens will be generated for the users who wished to participate in the PLO (as the action was unsuccessful).
As a parathread we would need to purchase KSM or DOT to pay for block inclusion. To cover this cost, one option would be to sell our native chain token.