How are they profiting? Don't they host those ads for free? Also, newspapers were hosting identical ads 10 years ago, and were charging for it. Isn't that wors

How are they profiting? Don't they host those ads for free? Also, newspapers were hosting identical ads 10 years ago, and were charging for it. Isn't that worse? Edit: After checking, they did charge for adult ads, after pressure. But my 2nd point still stands, how is it different from newspapers?