Thanks for the comments. We really try to be above board, include it in TOS, and encourage disclosure to the users. I mentioned this in another response, but we even have some affiliates that do some sort of opt-out procedure.
Our hope is that the users end up reaping the benefits from this via increased development dollars or reduced ads. We have some affiliates that are exploring ways of giving some form of in-game currency in exchange for Plura time. For example, you might earn more gold, a better performing sword, higher production, or something like that.
Legally speaking if the game (or whatever) doesnlt make 100% clear what is going on ("we are going to be using your CPU") then I'd say it's very shaky territory.
Also I am pretty sure that in a lot of countries you would be pretty much required to either have a splash saying "click yes to play this game and work some units" or have a workable opt out (I dont know if that exists??)
Our hope is that the users end up reaping the benefits from this via increased development dollars or reduced ads. We have some affiliates that are exploring ways of giving some form of in-game currency in exchange for Plura time. For example, you might earn more gold, a better performing sword, higher production, or something like that.