Is Loop11 free?
Loop11 isn't free, but it is cheaper than moderated usability testing. You also don't have to spend much money on incentives as users are participating when they want, and where they want (we've written more about this on UXbooth).
What is remote unmoderated testing?
1) What is remote unmoderated testing? Remote unmoderated testing is a method for testing websites, prototypes and mobile applications using online software or a dedicated remote user research platform.