I think the problem is that it contains almost 700,000 names.That database, the Terrorist Identities Datamart Environment, or TIDE, contains about 700,000 names. It is the main repository from which other government watch lists are drawn, including the F.B.I.’s Terrorist Screening Database and the Transportation Security Administration’s “no fly” list.
srsly? And you would be okay with the government collecting all that information on you? Also google ads are relevant but they are easy for them to figure out. If someone is googling for powertools start showing them ads for that. Do you want the government to start arresting people based on google searches? I also fairly often get google ads in my gmail that are in Chinese because I have a friend who sends me random chinese IMs that I don't understand.