[0x4a42]

Why do you think that? Compared to ads that are heavy on the user's network and CPU, track them, get them tons of unwated spams and other shaddy stuffs; why do you think giving some CPU power for a background miner is any worst?

When I did the experiment I thought it was a good deal for users.

[marian0_]

If you can't see the difference between showing an ad and mining bitcoin using your visitors' computers without their knowledge, you deserved to lose half your visitors.

[0x4a42]

Who said it was without their knowledge? It was clearly stated in my TOS and I even sent a newsletter about it.

Also I had a (sort of) premium plan that allowed to pay a small fee (2€/month to remove the ads and get some extra featues. When I made the BTC mining experiment they still had the option to choose between the free plan (BTC mining) or paying 2€ to get it removed.

[synicalx]

Hiding something in things you know people don't read doesn't mean it's suddenly an 'OK' thing to do.