Did you read the article? Sounds to me like that "meta-data" is all accessible and the tool speeds up the process of collecting that data. I recall tools being posted to Hacker News that help a person find all social media accounts linked to a name. Doesn't sound too different.

> Accurint, a product of data brokerage firm LexisNexis Risk Solutions, is advertised to law enforcement agencies as a tool that can quicken investigations and “discover non-obvious connections between people that might not otherwise be known.” Combining databases of public and non-public information, Accurint can provide detailed information about a person, including their phone numbers, relatives and associates, employers and social media profiles associated with their email account.