To send a feature request, please follow two steps:

1. Ask the Drigg community first in Drigg's forums.

Chances are, what you want to do is already implemented. Please make sure your request warrants a formal feature request first!

2. Make sure the feature hasn't been requested already

Please have a look here:
http://drupal.org/project/issues/drigg?categories=feature

3. Submit a feature request

If the feature hasn't been requested, please request it:

http://drupal.org/node/add/project_issue/drigg/feature