adCenter released a package of new Conversion counting controls which allows you to specify how you want your events counted. These includes:

• Count One Conversion Per Click: adCenter will only count the first conversion to occur after the click. Any subsequent conversions will not be counted unless they originate from a new click.
• Count One Conversion Per Unique URL: your site will “tell” us when a new conversion event has taken place. This allows you to synchronize adCenter’s conversion counts very closely to your own system.
• Count All: This option ensures that all conversion events are reported.