(photo by by kanjiroushi)

I attended the National Science Teachers Association conference here in Boston and saw many wonderful things.  One thing that puzzled me was a multitude of vendors selling "clickers" for students to key in a multiple choice response to a question.  I asked all those vendors if they had competition from people using mobile phones to do the same thing.  They all claimed to have never heard of it. 

It struck me as pretty easy to build so when I returned home I, of course, checked the wonderful blog From Toy to Tool and sure enough there is a post about a free (for less then 100 responses) service.   Liz, you rock!

Between APIs, like this service and many others provide, and Asterisk, the open source PBX, phone integration is getting quite straight forward these days.