w much traffic will this
  generate?</span>

<div class="answer">
The exact rate at which data will be sent is dependent on the actions
you are performing and the size of your source code base.  As an
estimate, we believe for a handful of small classes (e.g. the projects
accompanying the textbook) that the upload will
be around 3-4 Megabytes each hour of continued use, and the download
will be around 1 Megabyte each hour.  As a quick point of comparison,
loading the BBC news front page once involves downloa