When Steve Hitchcock says that "sustainability must precede preservation for institutional repositories," what does he mean?
Not to put words in Steve's mouth (Steve has plenty of words, all well-chosen), but here's my one-sentence take on it:
A service is sustainable as long as it has a constituency both willing to fight to keep it going and able to make that fight count.
This is, I grant you, a somewhat cynical assessment; I welcome less cynical ones in the comments. The corollaries for nascent data-curation efforts I leave to readers.