Electronic Portfolios in STEM

In preparation for my participation in the STEMTech Conference next week in Orlando, I prepared a two-page definition of e-portfolios for use in round table discussions. It may be too late to make any changes, but I would love some feedback.
Eport Definition


Here are the source documents referenced in this definition document:

• Balancing the Two Faces of ePortfolios
  http://eft.educom.pt/index.php/eft/article/viewFile/161/102 
• Online Personal Learning Environments: Structuring Electronic Portfolios for Lifelong and Life Wide Learning
  http://docs.google.com/Doc?id=dd76m5s2_39fsmjdk 
• Managing Oneself by Peter Drucker
  http://www.public.navy.mil/usff/Documents/managing_oneself.pdf 
• Effective Practice with e-Portfolios from JISC
  http://www.jisc.ac.uk/effectivepracticeeportfolios 
• National Educational Technology Plan
  http://www.ed.gov/sites/default/files/NETP-2010-final-report.pdf