I find it interesting that the author didn't mention LiveJournal as an option. The editor raises the good point that blogs haven't stood the test of time, implying that it may just be a flash in the pan. I personally see huge potential for blogs, as they place so much empahsis on content, rather than upon design. Of course, they do take some discipline, as my last "professional" blog wasn't exactly stellar. The original intent was to have a searchable list of all my lessons, weekly reports, etc etc. It started off well, giving me a nice place to sort out my thoughts, see where I'd been, and where I was going. But as my VISTA year went downhill, the posts became rants more than anything else.
I also really like the idea of web portfolios - granted I bring a significant skill set with computers and tech compared to lots of VISTAs, but it's definitely nice to be able to look back at what I've done, projects that were completed, materials that I developed, and just have an overview of my VISTA year. This was a fun icebreaker (though the last slide might be a bit much). We were required to prepare PowerPoints for a quarterly report, which I thought was a nice way of making us look back on the quarter, and also improve our public speaking skills. The simple animations I had students complete bring back fond memories as well - you'll need to view those as slideshows if you want to see the animation. Very simple - makes me wish I had had more time to develop the topic further.