Edit: a few advantages compared to or when combined with traditional contracting. First you can throttle up or down as you wish -- do 1 interview a day or 4. Second is once you've finished grading an interview, you've finished -- no remaining to-do tasks. Third is you don't have to go out and find work -- we fill your interview slots. You also get to help smart people from all over the world make life-changing career leaps, which is pretty exciting.
Edit 2: contact peter@triplebyte.com -- Peter runs our remote interviewer team and can give you more details.