From GG API Documentation
Ad Import Tool is an easy way to import ads from your own databases or files into Annonsera.se. It allows to import multiple ads in widely-used formats such as CSV, RSS and XML in one-click.
Annonsera API allows developers access database of Annonsera.se using custom-made software. It is a full-featured API which lets not only to search and read our database but to write into it as well using PHP, Perl, Ruby or any other web-ready language.
Widgets - Best way to display content from Annonsera.se on your own website. Easy to install and customizable. Widgets are based on Annonsera API.