In the February 2011 edition of The Physics Teacher, I had an article published entitled “Screencasts for Physics Students” (pp. 84–85). In order to create the screencasts on about three dozen physics topics and problems, I used online software provided by Screentoaster.com. All the videos were supported and stored on Screentoaster's servers. Unfortunately, shortly after the article was published, this company went out of business and all the videos referred to in my article were lost. I wanted to make sure anyone who is interested in creating screencasts for their students is aware of this, and also provide a few suggestions for other software providers to do this type of work.
I now use either Camtasia Studio, for which my school has a license, or a more preferred online service through Screencast-O-Matic, found at screencast-o-matic.com/. This service is incredibly quick and easy to use, and one can upload a...