Frequently Asked Questions
Q1. Why does the same banner keep appearing?
- A1. You are viewing a cached copy of the page.
Most browsers cache copies of the pages that you view by default. That
is, browsers keep a copy of the page on your local machine so that the
page loads quicker the next time you view it. However, since the page that
you are viewing on subsequent "visits" is from your local machine
rather than a new copy served from MGI, you will see the same banner ad
each time you view the page. To avoid this problem you can change the cache
settings on your browser. To view the newest copy of any page, you can
force reload the page by holding down the Apple key (Mac) or Control Key
(PC) while you click the "Reload" or "Refresh" button
on your browser.
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- A2. The banner ads are unevenly "weighted".
Banner ads are displayed according to an algorithm that accounts for the
total number of banner ads, the length of banner ad contracts and the projected
hits. Suppose two banner ads are new (i.e., no impressions) and have the
same contract length, randomly the banner ad with more projected hits is
more likely to be displayed than the banner ad with fewer projected hits.
If the difference in projected hits is extreme in this example, then one
banner ad is "weighted" more than the other and may be displayed
significantly more often.
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- A2. All other banner ads have expired.
Banner ads can be displayed for a period of time specified by the start
date and end date of the contract. When the end date passes for a particular
banner ad, the banner ad is no longer displayed. If all other banner ad
contracts have expired, then a remaining banner ad will be displayed continuously
until its contract expires or its projected hits have been fulfilled. In
addition, if all banner ads in a set have expired and/or their projected
hits have been fulfilled AND the defaultBannerAdSet parameter has been
included in the mgiBannerAd tag, then a default banner ad may will be displayed.
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