yeah, but again nothing stops you (or me, or anyone else reading this) to do it for free... except we will not, as we're busy earning money in other ways, so I

yeah, but again nothing stops you (or me, or anyone else reading this) to do it for free... except we will not, as we're busy earning money in other ways, so I don't think any of us can really claim a moral high ground here - and tutoring people for money is certainly much better than not tutoring them at all...