It's very easy to place an ad: click on the button "Post free Ads" above right.
The publication is 100% free throughout the website.
Absolutely not because your email address is not visible on the website.
In general, an ad is automatically deactivated from the website after 3 months. You will receive an email a week before D-Day and another on the day of deactivation. You have the ability to put them online in the following month by logging into your account on the site. After this delay, your ad will be automatically removed permanently from the website.
Once your product is sold or leased, log in to your account to remove your ad.