How do these businesses make money?

Can anyone tell me how web companies like these make money by providing graphics?

Graphic Company 1

Graphic Company 2

From their toolbar downloads

Hmm… and how does that bring revenue?
Is there a course or a book that can teach me this?
Thanks for your response.

Ads, overwriting cookies, inserting their own affiliate links into webpages, etc…

Not much that is truly ethical.

They are counting on users who aren’t that tech savvy enough to read the T&Cs before downloading/installing the toolbar. Stuff like this is what keeps the anti-spyware companies in business :slight_smile: