Have you considered social media, website and advertising site optimization as an online revenue stream? Are you doing it right now? The nice thing about keeping other people's websites and ads current is that you can do it when ever you want from the comfort of your own home. The businesses you support don't necessarily don't have to be local either. I'm just curious as to how many people with a strong online marketing background are successful with obtaining customers that don't have time to do their own marketing but understand its true value.