Exchanging stuff for eyeballs makes sense as long as the cost of providing the stuff is less than the value of the eyeballs to advertisers.
Eyeballs have value and are able to be exchanged for stuff.
Advertisers do not value eyeballs at all.
I forgot to tell him it was lunch time.
He had a weak moustache
The person in the picture is not wearing only one solid color.
The same pulse.
It was so terrible that I remembered it was Christmas eve.
People are outside.