PEOPLEFINDERS and similar people-search platforms function as data brokers, aggregating information from a combination of public, private, and commercial sources to build comprehensive personal profiles. 

The site claims access to over 150 billion records from more than 6,000 sources. These sources generally fall into three main categories: 

1)  PUBLIC AND GOVERNMENT RECORDS:

These are documents made available by law through federal, state, and local government agencies.

Property & Real Estate:  Deeds, mortgages, property tax assessments, and appraisal records. Court & Legal Documents:  Criminal records, arrest logs, lawsuits, bankruptcies, liens, and judgments.

Vital Records:  Birth certificates, marriage licenses, divorce decrees, and death records.

Civic Data:  Voter registration databases and census statistics (when publicly unsealed).

Licenses:  Professional licenses (e.g., medical, legal, or pilot licenses) and business registrations. 

2)  Commercial and Private Sources:

Data is often purchased or licensed from private companies and other marketing entities.

Data Brokers:  Buying or trading datasets with other specialized data brokers to fill in profile gaps.

Retail & Marketing:  Information collected from store loyalty programs, magazine subscriptions, and online shopping histories.

Financial Entities:  Aggregated data from credit bureaus and utility companies.

Direct Interaction:  Information provided through sweepstakes entries, surveys, or warranty card registrations. 

3)  Online Activity and Social Media:

Automated tools "scrape" or index information that users have made public on the internet. 

Social Profiles:  Public data from platforms like Facebook, LinkedIn, Instagram, and X (formerly         Twitter).

Web Presence:  Mentions in news articles, blog posts, forum discussions, and digital phone         directories.

Digital Footprints:  Publicly viewable email addresses and online account registrations.