The description for the planet module (http://drupal.org/project/planet) claims "This provides the benefit of showing avatars with content", but after installing it I can't find an option to turn that on. What I would like to do is resize user pictures to a particular size, and display them next to their posts in the aggregation page, similar to http://planet.ubuntu.com/ and http://planet.debian.org/. Does anyone know what I would need to do for that?