Here’s where it gets interesting. A Facebook ID itself is private information in the technical sense — it’s often embedded in public content. But using that ID to cross-reference data, build shadow profiles, or harass someone crosses ethical lines.

: If a user hasn't set a custom "vanity" username (e.g., ://facebook.com ), the ID is often visible directly in the address bar as ://facebook.com . Inspecting Source Code : Open the profile or page in a web browser.

Kendi ID'nizi bulmak en kolay olanıdır. Çünkü Facebook size özel olarak bir tane atamıştır.

Some developers discuss using it for layout columns in portfolio projects, as seen in Facebook coding groups .