I think the last point is one of the most important – I can’t tell you how many jobs I’ve gotten from referrals due to training someone else. People love talking about things they have learned or are currently learning – which can spark intrigue in others who either have a need or want to learn a similar thing. Trianing/mentoring has quickly turned into a revenue stream.

So true, Colin! Couldn’t have put it any better!

I’m afraid I don’t know of any writing courses myself…but what sort of thing are you looking for? Depending on the length you desire, a course like that might be a project I’d be keen to undertake. I’m currently working on getting a freelance design business off the ground, and looking ahead at ways to promote myself while giving back for all the great stuff which others have already put out there. Although my focus is more on design, copywriting is an interest of mine. I’ve noted that although many designers write a great deal (and I’m thankful they do), many of them are also quite poor at it. So an accessible guide which covers some of the common mistakes, along with ways to easily improve one’s writing, might be valuable to many freelancers. I wonder, though, if CopyBlogger doesn’t already provide that sort of thing? If you think there’s a niche there that isn’t filled, I’d definitely consider producing something for other freelancers once I get up and running.