I found this info on another website About it:
http://www.nairaland.com/3188579/extrememiner-mining-0.06-btc-perDO YOU WANT TO START MAKING A TON OF BITCOINS WITHOUT ANY INVESTMENT?
EXTREMEMINER MADE IT POSSIBLE FOR YOU!
What is ExtremeMiner?
ExtremeMiner uses your computer to mine CryptoCurrency / AltCoins and converts it to
BTC for you, Which will add instant to your balance.
How does ExtremeMiner work?
It is very easy to use ExtremeMiner. ( NO REGISTRATION NEEDED )
Here are the steps:
STEP1: Open this website on your computer:
https://extrememiner.com(NOTE) EXTREMEMINER WORKS ONLY ON WINDOWS COMPUTERS - WINDOWS XP/2000/7/8/10
STEP2: Click on Download ExtremeMiner Now.
STEP3: After the download you need to run ExtremeMiner file.
STEP4: When the file is running for the first time, it will create your account automatically using the hardware ID of your Computer.
STEP5: Keep ExtremeMiner open and enjoy your profits. As long as the app (ExtremeMiner) is running it will mine coins for you.
Now you have maybe this question. Why is ExtremeMiner offering this service what are their profits?
They are mining altcoins. That are worth more then Bitcoin Mining, so what ExtremeMiner does is it search for the best altcoins to mine at that moment when you run the Miner, and it will mine them and will send 5% of the mining to ExtremeMiner Developer/Owner and converts 95% to BTC and sends it to your balance.
Your balance you can withdraw after mining 0.5 BTC, This is for security reasons.
If you have any questions, Just ask me. I am always ready to help you smiley
Besides the big promises I almost can't believe that really old computers can mine such high amounts. Also the high withdraw limit of 0.5 Bitcoin stinks to much. How bigger the promises are how more chance that it will be a big scam.