- Track how many times you have seen a given ad: Many advertisers specify that they only want you to see a given ad one or two times per 24 hours. Sometimes Wikia sets similar restrictions to improve user experience as well.
- Provide better-targeted ads: Some advertisers collect anonymous data to provide you with ads that might be more relevant to your interests. For example, I recently did a search on Google for "toshiba battery", and now I'm seeing more Google ads on Wikia for toshiba.com.
Neither Wikia nor any of its advertising networks transfer this information to third parties. This type of behavioral advertising has been live on Wikia for as long as it has had advertisements; however, we wanted to be more clear about it, and also provide a way for our users to opt-out of behavioral advertisements if they would like to.