Your personal details, location, purchase history, income bracket, interests, and more may all be recorded and linked to your IP address, email, or social media presence.

These profiles, which may also be shared, sold, or traded between marketing agencies and other third parties, allow organizations to perform targeted advertising -- and use every psychological trick in the book to lure you to make a purchase.

While it can be difficult to keep your information out of the hands of agencies and brokers, below, you will find a breakdown of the most common ways you are being profiled online and how you can reduce the flow of your data.

Data is now currency. Your information and attention are huge revenue drivers for companies that provide services ranging from analytics and consumer technology to marketing and hospitality.