I work at a high school and everyone wants a whiteboard. I just found Mr. Lee on TED, my students and I followed the directions. Ta da! we got the new holy grail of education for $80 (our computers don't have bluetooth).
Now I have to make a presentation for the technology committee. My students plan to make things they would like to see their teachers use in class. So hopefully we will figure out lots of multi-point interactive things on this site and make some of our own.