Podcasting news actively maintains a Podcast Directory List, and the latest addition is iVideoBlast, focusing specifically on video podcasts that are iTunes compliant. Good point of reference for those seeking podcast subscriptions.
The Handbook of Research on ePortfolios is the single source for comprehensive coverage of the major themes of ePortfolios, addressing all of the major issues, from concept to technology to implementation.
The book will be released only in May 06. Can take time to request for budget if you are into ePortfolios and intend to buy a copy. It’s not cheap though, US$195.00 *wow*