title: Serving dynamic ads in OpenX
body: <p>I have a searcher page with a sidebar with filter options and, when you change this options, the mid content updates via AJAX, matching the filter options criteria.</p>
  
  <p>In this same page, I have 6 spaces for putting OpenX Ads Zones.</p>
  
  <p>In order to always serving relevant content in this Zones, according to the searcher filters, I want to replace the zones with other ones via AJAX. So, if the user select, by example, Region 4 and Category 12, I will show the R4-C12 zone.</p>
  
  <p>My problem here is I got a lot of categories and a lot of regions, so the number of combinations is huge. Also, I'd need 6 times this number, for I get 6 spaces in the page. This is something like 3500 zones!</p>
  
  <p>My question is, is my approach correct or is there a better way for serving relevants and dynamics ads using OpenX?</p>
  
  <p>If there's no a better way, I can use the API for creating this zones and that shouldn't be a problem. But then I need to know what's the limit of zones per publisher OpenX cant hold.</p>