I've had a bit of modest success doing on line writing; content, press releases, sketches for rodeo clowns, jokes about roofs and now in production a book about poohing.
Modest enough success to think about taking a 6 month sabbatical from my day job and focus on actually doing some fun writing.
Any way if you're interested here's a blog on the subject by my good, if intemperate friend Dr Sardonicus.
deleted it, wasn't worth it in the end./