I always wanted some kind of tool in Drupal that would allow me to upload files from third-party services.

There are quite a few modules that would allow me to upload files but none of them worked well for me. Either they asked me to put the URL or they would just store URL's to remote files.

Because of lack of such a module on Drupal.org I came up with the idea of creating a module that would combine several services and have ability to download files and use them in Drupal specified fields.

After spending several days I was able to create a working prototype and eventually released a module called File Chooser Field.