The Referral Sources module allows you to ask your users “Where did you hear about us?” anywhere on your site, and track that data in a central location. It provides a admin interface for creating referral sources that users can select from a list, and a page where you can view statistics on referral source selections. Referral source submissions are stored in a single table, no matter where they came from, making it easy to track submissions and create reports based on that data.

Recently I started building some sites with Drupal, one of which is an online store using Ubercart. Everything worked great at first, but after upgrading a couple of modules some images in the catalog were not being displayed properly. After upgrading imagecache (5.x-1.7 to 5.x-2.3) and imagefield (5.x-2.1 to 5.x-2.4), taxonomy images stopped appearing in the catalog categories and the smaller thumbnails stopped appearing in the product pages.