Prioritize ads based on content

[davidfischer]

This changes the prioritization of ads requested from the client.

• Lower priority of sidebar placement if it would be below the fold
• The above will automatically increase the priority of footer ads relatively
• Increase the priority of a mobile text-only ad when on mobile

These priority changes only affect the choice of an ad within a flight of ads from the same advertiser. The flight will still be chosen based on the targeting criteria and probabilistically on how many clicks/views are needed to fill the ad buy.

[ericholscher]

This makes a lot of sense and should hopefully increase CTR. I also wonder if we should do something similar w/ footer ads and short content. I know there was a user who complained about the mobile ads on really short pages, so maybe we should also de-prioritize them if the content length is <500px or something.

[davidfischer]

I know there was a user who complained about the mobile ads on really short pages, so maybe we should also de-prioritize them if the content length is <500px or something.

They complained about the regular footer ads on very short pages. I agree. On very short pages, lets deprioritize footer ads in favor of sidebar.