  This is urlLink a nice article . In many ways, it tempts me -- you can certainly earn more having 15-20 clients than just having one. And you are less likely to be affected when your contract doesn't get renewed, as has happened to me twice recently. But there are down sides too. Like, how would you ever be able to take a month off with 20 clients? What about calls at 8am, and 8pm? I'd need to set ground rules up front. I'm not too keen on giving phone and email support for free, although I think it's very difficult to charge accurately for it. Still have to think about that one.... 
