I had an op ed ("Soundoff") published in the November 2010 issue of The Mathematics Teacher, a special issue on technology. ( I suspect it is only available on line to members of the National Council of Teachers of Math.) The piece is a substantially expanded version of my blog posts about why I use the interactive white board. It is illustrated with actual white boards from various of my classes.
In addition to making the case for that technology, I use the article to argue --as I often do-- against the idea that math class should be 100% student discovery, or 100% teacher presentation. The latter, of course, is a particular concern in an article about a teacher-centric tool like the interactive board.
In any case, if you are a member of NCTM, check out the article and let me know what you think. If you're not, and want to see the article, let me know. I have a few extra copies.