the post by WikiLeaks specifically stated Family
A database of verified people and their family is a simple family kidnapping filter.
Bill made a lot on a deal, Bill is just a verified twitter user whom owns a store, brags about it business, and did a huge deal
that he's popping a bottle of wine.
Villain opens up the database and starts a review of reasonably near targets and finds Bill, Villian take his daughter and
Bill will have to pay $$$ to get his kid back ( which is most likely dead )
Those that buy data are trackable.
and facebook is troubling.