Ask HN: What do you pay hourly customer support folks?

I'm looking to add on part-time customer support for one of my projects. Is there a "going rate" for this type of work? The support person would be working from home (in the US), 1hr/day, answering customer account questions, monitoring Twitter, responding to other FAQ-style questions. They'd pass "too-difficult" questions up to me if necessary. What's a reasonable amount?