Celebrity Net Worth - Richest Rappers, Celebrity Houses, Homes and Salary

Over the weekend, Yahoo agreed to purchase micro-blogging platform Tumblr for $1.1 billion in cash. This acquisition will make Tumblr's 26 year old, high school drop out, CEO David Karp, a VERY rich man.

Sam Simon made hundreds of millions of dollars off The Simpsons, a show he only worked on over four seasons. He spent the next twenty years giving his entire fortune away to charity.

As of late last night Bill Gates has once again regained the title of richest person in the world over Mexican billionaire Carlos Slim Helu. USA! USA! USA!

Hugh Hefner's house in the Hollywood Hills is massive, gorgeous, and will only be inhabited once he passes away. Related Link: Hugh Hefner Net Worth

Diane Keaton, always a trendsetter, drives around town in a Mercedes-Benz G-Wagon. Related Link: Diane Keaton Net Worth