Ever the proud father, Chris MacAskill screens 20-year-old home movies of his sons - Ben singing about a stegosaurus, Mark getting a Mohawk - on his laptop.

"This is the negative of working with family members," a red-faced Mark, now 26, says before retreating to his cubicle.

Meet the MacAskills, Silicon Valley's version of the Waltons: seven members of a close-knit clan, ranging in age from 23 to 63, who run SmugMug, which helps families share their own Kodak moments online. They are holding their own against photography services on the Internet run by corporate giants even though they have never taken a dime from outside investors.