[bzcomputers]

This has nothing to do with the Forum software but has to do with how you set up your advertising program outside of your forum.

Most advertising programs (for instance Google Adsense) will look at the content of your Forum and try to supply ads which they believe will get the best response / click through rate. This is called contextual targeting and will happen without you having to do anything extra. Most of the information on this you can find with the ad marketers themselves, like Google Adsense.

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There are also ways to help advertisers by creating custom ad / channel combinations if you have a wide range of varied topics throughout your forums. This way advertisers can target forums more specifically related to their products. In this case, you would need to do some custom coding (template edits) to make different ads show for different forums.

Say you have forums 1-4 that all have to do with one topic, and forums 5-8 have to do with another topic. You would then create an ad / custom channel (so advertisers can target that specific ad/channel combination) for each of the two topics.

...and when you get to the point of customizing your templates it would look something like this.

<vb:if condition="in_array($GLOBALS['forumid'], array(1, 2, 3, 4))">
YOUR AD SCRIPT HERE FOR TOPIC #1
</vb:if>
<vb:if condition="in_array($GLOBALS['forumid'], array(5, 6, 7, 8))">
YOUR AD SCRIPT HERE FOR TOPIC #2
</vb:if>