In more detail, he did the following:
He created a free wiki using PBworks.
For each course, he created a page on the wiki for the next exam.
After each lecture, he put aside time to add the relevant notes to his wiki. To do so, he would create a subpage for each topic, and then list the main points, add snippets of sample code, or summarize any other information relevant for the exam.
Following the stealth studying philosophy, he would then access his wiki using his iPhone while walking to class and waiting for the lecture to begin, doing quick bursts of review. (PBworks plays nicely with iPhones, making it easy to browse the wiki on the run.)
But, I don't think I missed the point of Twitter at all. It's quite the opposite. I'm constantly trying new Web 2.0 tools. Many do what they are supposed to do -- just like ordinary tools in your toolbox. But time and efficiency matter. Where I'm at right now in my professional life, I need a power washer not a putty knife/paint scraper. Both do what they are intended to do, but one gets results much more efficiently. Blog commenting, Nings, webinar participation, and back channel commenting are, to me, PLN power washers.
