With all the fuss over in browser mining I could see some small benifits for certian implimentations for websites.
Small/short term "special" member upgrade - short day/week passes.
Member enchantments - (there are a couple of paid add-ons that allow for this)
It would be great if the digital currency "Bitcoin" would be added as a form of payment. This would eliminate the problem of chargebacks.
Here are some solutions:
There are already wordpress plugins which lets you monetize digital content.