It's a stripped down linux distro made specifically for easy mining rig configuration and operation. Instead of installing a full Ubuntu or Windows operating system, you can install Simplemining and be ready to mine much more quickly.
When you sign up you have a few dollars in free credits. I forget how much exactly but enough to try it for a few days. Once you've used that up it costs $2/month/rig
It's a stripped down linux distro made specifically for easy mining rig configuration and operation. Instead of installing a full Ubuntu or Windows operating system, you can install Simplemining and be ready to mine much more quickly.
Are they charging for it?
When you sign up you have a few dollars in free credits. I forget how much exactly but enough to try it for a few days. Once you've used that up it costs $2/month/rig