What do ya'll think about the idea of using test-nets or even something like datacoin to host websites?
I think it is cheaper than using mainnet. But even then, there is no reason to spam some existing network, where you can create your own, and only commit to some existing network, just to reuse its Proof of Work and commit for no additional cost. So, you can create your own blockchain, with your own content, add any rules you want (that would be more suitable for hosting files than for moving coins, so coding and adjusting consensus rules would be easier). Then, you can just place "OP_RETURN <someHash>" in a TapScript commitment every sometimes to get Proof of Work protection from some chain. It will be definitely cheaper and still very secure, without creating spam on the chain you want to commit to.
-TN is impermanent which is fine because websites will be updated anyway...
I think one commitment every sometimes for the whole network is all you need. If you only want to attach to the Proof of Work, you don't have to push things on-chain, you only need to create a commitment, then you can adjust content on your side, and everyone will still be able to verify if your commitment is correct, so every participant of your network will be sure that the history was not modified, and that your history is protected by Proof of Work of the chain you commit to.