Trading visitors' CPU power for access to web applications/content might be worth something. Perhaps not so much with BitCoins but instead with some other calculations. The more CPU power you give the better service/experience in return.
The calculations does not have to be for the service provider's own needs. There can very well be a third party involved in this transaction, perhaps one that aggregate CPU power from visitors on many sites (similar to ad companies today). It might be sold as cloud computing power or something to other companies.
If you don't pay with verifiable computations then you don't get any content. No Adblock can save you there. On the other hand it's no effort on the user and no extra pay wall steps to take manually.
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Trading visitors' CPU power for access to web applications/content might be worth something. Perhaps not so much with BitCoins but instead with some other calculations. The more CPU power you give the better service/experience in return.
The calculations does not have to be for the service provider's own needs. There can very well be a third party involved in this transaction, perhaps one that aggregate CPU power from visitors on many sites (similar to ad companies today). It might be sold as cloud computing power or something to other companies.
If you don't pay with verifiable computations then you don't get any content. No Adblock can save you there. On the other hand it's no effort on the user and no extra pay wall steps to take manually.