Marc Richmond saw a presentation at a tech conference by the Great Bay Learning Charter High in Exeter, NH.  They use the open source? course management with a module called Moofolio (no, I did not make up the name) as a way to store portfolios of student work.  Marc was not sure but he thinks parents can access the work.  Thought it might be worth someone exploring this.   Perhaps someone from PBL will take this on.  The URL is:

http://www.gbecs.org/