Since we launched our new campaigns types and targeting possibilities, you might have experienced a slight increase with CPI/CPC bid rates.
We wanted to let you know that we changed our bid logic to allow you, our advertisers, to enjoy more accurate targeting and get the users you want.
A broad targeting might actually decrease your CPI/CPC bid, but would probably also attract more generic users.
We highly recommend using our new targeting options. Please keep in mind that bids can increase when you choose to use these targeting options:
Device targeting
OS targeting
Geo and/or City targeting