-[[http://flickr.com | Flickr]]: both have been created by us, but try downloading
-substantial portions of their data, if you can.
+[[http://flickr.com | Flickr]]: both have been created by us users, but try downloading
+substantial portions of their data... On the other end of the spectrum,
+[[http://wikipedia.org | Wikipedia]] provides an interface to dump the
+entire database, including the edit history. This is what we should demand
+from any online resource built collaboratively.