Depending on what skills you have, if you have any academic skills.
If I ever get in financial pinches I can do Skype tutoring or do peoples' homework/quizes/tests for them ranging from $15-25 hour.
Take your own initiative on it and work just flows through craigslist and blogs you setup funneling into your service site.
There is a lot of demand for it and though I'm skilled from rudimentary math through higher levels of calculus and some differential equations, most of it is nothing beyond algebra. I mention this because it's immediate income if you need it.
75-80% is just people wanting their hw done however.
Nothing to ever brag about but if you are single it allows for an extremely flexible and jackoff schedule and easy way to make $30-40k+ a year relatively stress free, or act as supplemental.
Otherwise you'll need to have a story to tell in adult rather than just praying the search engines send strangers to your blogs.
I've got a couple of projects I'm working on that are very exciting, will be revealed within the next couple months to site owners.
