To try and deal with some of the other points. Ian's letter, you know full well it wasn't a letter, it was an extremely well written presentation that he was invited to give at Windex. It was clear, honest, and brief.
There is no benefit at all for him, that I can see, in his sharing this with us. I find it interesting both as an idea, and that by doing this you can quite legaly have a business turning over half a million and pay no VAT.
The Jim's mowing text is interesting because it has so many similarities with us, he's Australian and his background is in cutting peoples lawns, but it reads just like some of the posts on here.
What is the problem with mulling over an idea?