As Rich Murnane in this US blog post notes:
"I’m not a privacy nut but we’re moving into an age where just about any information you want to find out about a person could be found out with an Internet browser. Data aggregation websites are exploiting this “Mosaic Effect” culling data together from social networks, online auctions, online real estate and tax databases and wherever else they can get grab information about people. Like it or not, sooner or later you won’t have to ask someone “boxers or briefs”, you’ll pay $36 to some random data aggregator and you’ll find out the person’s waist size too."In the US a lot more information about individuals than is the case here-DOB, driver's license, car registration, for example-is in the public domain.
The issue for the decision maker In the Tamworth case was whether the information in question constituted personal information as defined in GIPA: information about a person whose identify is apparent or "can reasonably be ascertained from the information or opinion."