Create an ad
Your 728 x 90 banner ad will be seen by Free members at the position shown above. It's on a Cost Per Click (CPC) model so you only pay when someone click on your banner. You can select Global or one of the selected countries. A Free member will see Global banners and those of their country.
You also have an option for a 468 x 60 banner ad on the home page (English/French) thus visible by all visitors.
Since it is per click, it's not possible to know how long your ad will last. It's could be hours to months.
The payment will be taken only after the ad is accepted.