bump, would love to hear more minds
Personally I'm not against this, as long as it's clearly stated somewhere (regarding the action itself and information of the charity).
Like i said - sure there should be an option to disable.
If you're implying that only a disable option should be there (meaning by default, mining process happens automatically [with the option to disable it]), then I'll be against it.
In order for this to have any significant outcome or rather a donation for the charity, a lot of users should accept and use it (I can't see this happening, therefore it will be a waste of resources).