<div dir="ltr">A walled garden is an empty container that people are encouraged to fill with their precious content—at which point it stops being “theirs”, and becomes the effective property of whoever controls the container. The key word is control. <br>
<a href="http://johncarlosbaez.wordpress.com/2013/07/12/the-selected-papers-network-part-3/">http://johncarlosbaez.wordpress.com/2013/07/12/the-selected-papers-network-part-3/</a></div>