A US educational technology journal called Innovate holds web seminars and makes the archives available to subscribers. You can get a free account here. However, in order to get to the seminar archives you will also need to install a VPN on your computer - you can quickly do that from here if you don't already have one. If you are at home when you use the VPN, use the offcampus option. But if you are on campus you need to pick the oncampus option, then, when it asks you to log in, use you usual unikey login with !10 directly after your username - no spaces - followed by your usual password.
If not you're completely exhausted just by reading this far, take heart: this archived seminar is worth it. It is called 'The Power of "E": Using e-Portfolios to Build Online Presentation Skills' and is given by Cara Lane from UWashington in Seattle. It is an excellent overview of some of the benefits of using eportfolios with two groups of students: with junior students to improve their academic writing skills by taking them from the familiar (email and blog writing) to more formal ways to present themselves, and also with professional students to orient them to the presentation skills implicit in their future life.
It's also an excellent example of how a good web seminar can work, I have attended one that wasn't very involving, and I wasn't impressed with the idea then. This one was much better.
There is a seminar series from 5-9 June on eportfolios - details here - but I will be still away that week. There is one on June 6 about eportfolios with a number of speakers (I think it's 9am on June 7 here but don't take my work for that!). I will listen to it when I get back and review it for the team.