I'm a solo founder, spend most of my time running http://www.w3counter.com and http://www.w3roi.com. I also have a number of other sites I don't routinely talk about because they're competition-sensitive, and some past products that have been successful and sold, like "WP Review Site", a WordPress plugin that earned me over a quarter million in the year and a half I sold it. I started building webapps/services for a living in earnest in 2004 as a college freshman to pay my way through two degrees, finished that last year and bought myself a new car and a new house this year. It's going well, though the poor economy has hurt some of my customers and me by proxy.