2 ms·

Can't help but notice that as soon as Web advertising made it feasible to see how much advertising led directly to purchase rates plummeted.

• bruce343434 5y ago
  In that sentence, What’s the subject of the verb “plummeted”? Is “purchase rates” both acting as an object and a subject? I’m confused and can’t parse your comment.
  • everythingctl 5y ago
    s/purchase/purchase,/
  • emodendroket 5y ago
    "rates" i.e., Once advertisers could measure how effective their ads were, they were no longer willing to pay as much