This is called “installing a cryptominer on your web page” and is generally considered illegitimate.
> generally considered illegitimate
But why? Obviously an unjustified cryptominer is bad, like unnecessarily slow JavaScript, but this one has a good purpose and to the user is no different than PoW.
> generally considered illegitimate
But why? Obviously an unjustified cryptominer is bad, like unnecessarily slow JavaScript, but this one has a good purpose and to the user is no different than PoW.