Some data sets already have highly personal information. For example, if you look at a Government of Canada telephone directory, it lists not only the individual but their position, and then you can cross-correlate with pay scales and so on and so forth. Is this a concern to the open data project, that data miners could correlate information provided through open data with other data sets that are not protected from a personal information point of view, and very purposefully so?
On March 4th, 2014. See this statement in context.