hey.
The good thing about a one man operation is that you dont have any overheads. I started my startup with 4 people, but later learned that one was enough to start off with and i should scale according to the profits im making - instead of putting my own money into it (which i didnt have much of anyway).
My startups: (http://opensource.com.pk) and (http://sells.pk/) are web agencies specializing in different areas. The former provides managed freelance outsourcing for larger projects and the latter specialized in e commerce for small/medium businesses.
The first few clients help you pay the bills and buy bread, but if you keep at it and be persistent after a year you will have more clients than you can handle, that is the time to get employees. I am almost reaching that point, and that is what excites me these days.