I've recently become interested in the durability of ePortfolios -- as I describe in this piece here (ePortfolios, Durability, and the Black Binder Test). I was wondering if you've heard of any attempts to decouple the interface and presentation of ePortfolios from the storage of the artifacts (and optionally the reflections) -- say through using Amazon S3 or some other 3rd party space that could be truly owned by the student or faculty member regardless of where they wind up. Is anyone moving in this direction?My first e-portfolio was created in 1997 (10 years ago), using Adobe Acrobat and pressed to a CD. I still have a copy of that portfolio (on my hard drive) and I assume the original would be readable, if I could find the CD. Most of the systems that you mentioned in your blog entry all allow exporting the portfolio into an HTML archive that can be stored on any online system that the learner "owns". So the solution to the problem that you pose is to store these portfolios in an online system. The challenge is finding systems that will be around for a while. I pay an annual fee for my online storage, and I am exploring GoogleApps. Yahoo is too small for portfolios, and I don't know if I should trust some of the online storage systems like box.net. There are other free systems out there, like ourmedia.org, but I don't think they handle entire HTML archives.
I think if portfolios are stored in HTML (ASCII text) or PDF formats, those are the two formats approved by the Library of Congress for digital preservation. There are other issues for preserving audio and video, but WWW-compatible universal formats should be safe for the next ten years. The next step would be XML formats, which the European ePortfolio community is trying to address. There are also now IMS ePortfolio standards, but I'm not sure that the commercial providers in the U.S. all conform to that standard. But virtually all of them allow exporting a portfolio to disk archive.
You can look at my study of online portfolios (I am up to 25 versions of my portfolio). If I was able to download a copy, I posted it on my web server and created a link to it. You will also notice that all of my artifacts are web links to artifacts that are posted on one of my web servers. So, I am modeling the concept of "lifetime personal web space" which Cohn & Hibbits advocated in their 2004 Educause article. The issue of digital preservation is real, but has been solved, at least in the short term (10 years). The real question becomes whether these portfolios can last as long as their paper versions (50+ years).
This is not just an issue with ePortfolios. What about all of the digital photographs and other digital documents that we collect? Some historians are concerned that we may have a "hole in history" because so much of our data is now stored in digital formats, which are one hard drive crash away from extinction. So, backing up our data to online servers becomes more critical. I try to model that process, but at a cost. I hope I have instilled those same values in my children. Of course, I wrote in an earlier blog entry about the tragedy of New Orleans and the loss of memories and physical memorabilia that happens in these type of disasters. So, establishing digital archives online becomes even more important.