[bonemachine]

"Tom Perkins has not been involved in KPCB in years."

Really now? Apparently he's still listed as a Partner Emeritus:

   http://www.kpcb.com/partner/tom-perkins

To quote from KPCB's own linking page to the above:

By continuing their relationship with KPCB long after leaving, they bring our portfolio companies the benefit of decades of deep experience.