Shit, if I was an Amazon warehouse worker and had the chance to get paid the same except SOME of my workload was sitting down and shilling for Amazon on twitter, I would jump (well, sit) at the chance. It's a different kind of demanding, more like being a commercial writer, probably more open to people who are damn good commercial writers and happen to be working as a picker in an Amazon warehouse. It'd be like getti…
They probably wouldn't let you sit down, unless you were shilling on your lunch break. Amazon has a policy against their warehouse workers sitting down while on the job, not even HR is allowed to sit when they're staffing the front.
You can squat though, and I've tried to get around it by sitting seiza.