For those of you still interested in following the NMRShiftDB debate, one of their contributors Egon Willighagen (over 900 spectra, Bravo!) sounds off on his blog.
You can read his comments here:
http://chem-bla-ics.blogspot.com/2007/06/quality-of-chemical-database.html
EDIT: This conversation has continued in the following entries (in order):
http://acdlabs.typepad.com/my_weblog/2007/06/the_purgatory_d.html
http://acdlabs.typepad.com/my_weblog/2007/07/final-note-on-t.html