It may be time to install a revolving door in the Human Resources office at Prosper Marketplace (prosper.com) as the pace of departures by high-profile executives appears to be picking up speed.

In addition to the numerous departures of a decidely mixed bag of human talent during Prosper’s short life, there are reports tonight that General Counsel (and Chief Compliance Officer) Ed Giedgowd is no longer with the company, but has been replaced by a gentleman named Sachin Adarkar.

In related news, it has now been confirmed that Product Manager Andrew Martinez-Fonts has also moved on to another venture. 

Other notable departures over the years include:

John Witchel, Co-Founder and Chief Technology Officer

Thomas Pigoski, VP Information Security & Risk Management/CISO

Karen Appleton, VP Business Development

Rob Klapper, Chief Marketing Officer

Shira Levine, Marketing Director

Update: Fellow Giedgowd-watchers may find this (How about it, Mr. Giedgowd?) of some interest.

Update: Chief Marketing Officer Catherine Muriel departs

For the benefit of those who were not involved with Prosper from the beginning, you may enjoy learning about the original vision, presented to Google in June 2006 – and realize how difficult it is to recognize this vision in Prosper of today.

This is also a useful primer for the oldtimers. In retrospect, this is perhaps one of the most important pieces of video about Prosper Marketplace.