Relevant section of EULA: http://archive.is/n7wCB#selection-645.1-651.45

> In return for free usage of Hola Free VPN Proxy, Hola Fake GPS location and Hola Video Accelerator, you may be a peer on the Luminati network. By doing so you agree to have read and accepted the terms of service of the Luminati SDK SLA. You may opt out by becoming a premium user.