Flickr Sprinklr is an asp.net app I wrote to allow Flickr users to quickly add their photos to multiple groups. Flickr users often submit photos to 20 or more different groups, and the interface in Flickr currently requires you to submit a photo to each group one at a time. Sprinklr loads all of a user's groups into a table and then allows them to check off checkboxes for each group they would like to submit the photo to. If you save the Sprinklr Boomarklet to your browser's Links bar (Internet Explorer) or Bookmark Toolbar (Firefox) and then browse to any of your photos on Flickr, when you click the bookmarklet it will take you to the photo on Sprinklr so you can add it to groups.  If you hover over any of the group descriptions, Sprinklr will display a tooltip showing the group’s description so you can quickly see the rules for posting in each group.  To use Groupr you must of course have a Flickr account, and belonging to some groups helps as well.

Sprinklr has been linked to by the Great Flickr Tools Collection