Xooglers, retire or ?

What would you do if you were flush with $10 million or $100 million? Would you retire, go to work every day at the company that made you rich, or chase other dreams?
That's the multimillion-dollar question for hundreds of early Googlers. By some estimates, more than 900 employees became instant millionaires when Google went public in August 2004, and that total has likely ballooned along with the stock price. On Friday the stock closed at $600.25, up more than 600 percent from its opening price of $85.

News.com finds that some of them are going down the PayPal path by becoming entrepreneurs in their own right:

Like some of his peers, Harik is investing in small companies like Wi-Fi company Meraki, and he's helping to develop a Web-based video conferencing company called Imo.im with his brother. Harkening back to his college studies of mathematical models of genetic algorithms, he's also opening a yet-to-be-named research lab in Palo Alto to develop artificial-intelligence software for the fields of biotech and medicine. He plans to invest about $100,000 in the lab this year.

Whereas others have become philanthropists:

Now, with millions in the bank since leaving in December 2004, she has retired, set up a charitable foundation, and written a book called Giigle, which went on sale at Amazon.com last week. She spends her time between a house in Nevada and a Southern California beach house, where she sees her grandkids.