Say you were starting from scratch, how would you go about earning 100$ a week?
I would probably freelance a few small projects a week or maybe one or 2 big projects a month. I would also start up a blog to start building my revenue in a longer lasting way. I might also throw together an entertainment site since those build traffic relatively easily and the possibilities to monetize are endless.
I would write basic content and make my own small content sites. Some I would work the SEO on and keep, and some I would sell. This would easily profit $100 week with a bit of effort.