@Alex Jordan I'm really interested in making sure people are able to keep their data, though I have two ponderings on this:

• If you are running your own system (or one for family and friends) and have the data reproducibility requirement fulfilled, can't you just move your data reasonably easily? I think "data liberation" might be more for instances where someone is running something for you
• up until now, "data liberation" is such an application-by-application process, I can't think of any way to generalize it as a system...