-My current personal policy is to use these services in read-only mode, without
-helping them collect even more information.
+The [[http://opendefinition.org/ | definition of open knowledge]] is still a subject of
+debate. At this time, I avoid web services that disallow bulk access to data created
+collaboratively by their users. An examples of such badly behaved site is
+[[http://www.imdb.com | IMDB]] and [[http://flickr.com | Flickr]]: both have been
+created with data provided by users, but access to this data is only possible through
+the service, and bulk downloading is not allowed. 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.