Plaxo
We’ve been working on exciting and important problems in the consumer Web space since 2002. We pioneered the “smart address book,” and we host over 50 million address book accounts for Plaxo.com and for Comcast’s Xfinity Connect experience. In 2008, we were acquired by our largest customer, Comcast. We are now operating as several distinct, entrepreneurial business units in our Silicon Valley office.