You or students can create socially ranked questions where students can determine importance and that get updated in real time. Students can also participate in polls and respond to questions through a clicker type system. At the same time, students can mark whether they understand or are confused about something and the software updates real time. There is also an area for discussions where teachers can create topics and the can be discussed.
If you're looking for a ridiculously easy tool that can save you time and hassle all while helping to ensure that your parents actually read the content that you are posting on your classroom website, Posterous rules.
"My current experiment involves not so much flipping homework as (almost) ending it. I’m using document-based lessons in which all reading and discussion is done in class, and the only homework is a reflective blog post about the day’s content on a team blog — which student team-members read and comment on with corrections, extensions, challenges, etc."