Btw what are we mining with CPU?
Bitcoin. You're mining Bitcoin. The FreeBitco.In site is focused solely on Bitcoin.
So, I asked a question a few pages back about this not working at work, and nobody was able to say what was happening. From what I think I've figured out, it doesn't work from my work's network because Coin Hive is blocked on that network. So "mining bitcoin" seems to be a bit misleading. I mean, since the results of your mining are being displayed only in the BTC value mined, I can see a technicality for saying that you're mining BTC, but from my limited understanding of what's going on, I think that the miner is mining Monero using Coin Hive and that value is automatically being converted to BTC and applied to your account.
It seems like the earnings per hash have gone way down from when I was first trying to figure this out. I missed out on the easy earnings because I was trying to figure out what was going on with this site and what it actually was doing
I was earning at a rate that I would have expected to see from GH/s in mining Bitcoin - I wish they had just said on the beta test page that was only available to limited users, "This is an embedded Coin Hive miner. Your browser will mine Monero that is credited to your account as BTC because FreeBitco.in is a BTC only site." I would have been all over that!