The PLE Conference website(s) have found a new home and we are still working on it. This is now a portal from which you have access to the past, present and upcoming PLE Conferences.
Here is the link to the PLE Conference 2014, which will have soon all information on it.
For information about the previous conferences you can go to the archive for 2013 and 2012. We are working as well on the archiving of 2011 and 2010.