Money isn't everything. Mark Zuckerberg may have the highest net worth among his generation of entrepreneurs, but the Facebook CEO only gets 21 out of 294 pages in Sarah Lacy's new Web 2.0 book, Once You're Lucky, Twice You're Good. That's 16 more than his sister, nerd chanteuse Randi Jayne Zuckerberg, which tells us Lacy has her priorities all wrong. The Zuckerbergs' index page:

Previously:

• A is for Adelson, who cofounded Digg
• 
  
• B is for Botha, who sold YouTube big
• 
  
• F is for Fitzpatrick, and "hookers and blow"
• 
  
• L is for Levchin, who never goes slow
• 
  
• P is for Parker, the Valley's bad boy
• 
  
• R is for Rose, who made Digg his toy
• 
  
• T is for Twitter, which turned blogging small
•