Search Data - Is Google a Good Search Engine?

The privacy ramifications would be very big in that. The other question is, if someone's planning a murder with searchis, which has clearly happened on numerous occasions. And i wonder if there might be a weird effect of somebody realizing that thei search data and their inernet behavior in general, is being monitored. If they don't want to end up getting a disturbing signal back... maybe that will be the treatment.