Pros: open schedule
Cons: everything else.
Took the job while in between professional jobs and it was by far the worst job I have ever had.
Job itself is subjective and the constant audits are infuriating. Even when I would be at 100% correct for a day, I would feel like all I was doing was being tested and the real work didn't matter. The days seemed to last longer than four hours and when the program crashed(which it regularly did) you would have to wait around until it was back up or told that you didn't have to finish work for the day because the program wasn't coming back up. IT was useless and I often resolved the issue myself on several occasions when IT suggested I do something I informed them that I had already done in my ticket to them.
Management was a joke and I was lucky if I ever heard back from my project manager when I had question or concern.
Overall, desperation is the only reason anyone should do this job. If you really need income, it's good money for mundane, redundant work on a search engine people don't like. If you can pull in income another way, do that first and Appen last.