Tribal Fusion is the latest ad deliverer to offer dynamic ad assembly and delivery, reports ClickZ.

Like Yahoo's recently-launched SmartAds, Tribal's Dynamic Ads allow advertisers to upload ad elements such as different types of backgrounds, text styles and more to the Tribal system. Ads are then assembled from available elements and delivered to the user based on demographic and geographic information.

Early - and anonymous - reports by Dynamic Ads testers show an increase in click-through and conversions.