If you have a developer plan and use "refer a friend" option, you can earn up to three extra "premium" nodes for free by inviting your friends - https://www.clo

If you have a developer plan and use "refer a friend" option, you can earn up to three extra "premium" nodes for free by inviting your friends - https://www.cloudkick.com/blog/2010/nov/24/invite_a_friend/ https://www.cloudkick.com/blog/2010/nov/24/invite_a_friend/.