Screencast-o-Matic

I learned of a new screencast tool from Chris Ozias (Pinckney Technology Integration Specialists) while at the "Tech or Treat" MACUL/Discovery Education Event on Saturday.  It's called Screencast-o-Matic.  No download and no account registration required!  I just recorded a quick screencast to introduce an 8th grade inquiry-based science lesson I developed.  Creating the screencast was super easy (no need to read any directions or change computer settings).  There are many saving options:  MPEG-4, avi.  Or share direct to youtube (However, this didn't work when I tried it) or to Screencast-o-Matic.  There is some advertising, but it didn't seem offensive.  I'm thinking that this could be used easily by students!