Members of the PayPal Mafia include tech titans like Elon Musk, Peter Thiel, and Reid Hoffman. Here's where they are now.

• A group of early 2000s PayPal employees and founders came to be known as the "PayPal Mafia."
• The members have all gone on to impact Silicon Valley by founding and developing major companies.
• The group includes Elon Musk, Peter Thiel, Reid Hoffman, and the founders of both YouTube and Yelp.

What do the founders of YouTube, Yelp, Tesla, and LinkedIn have in common? Apart from creating some of the biggest companies in tech, they all share a common résumé line item: they've all worked at PayPal.