Super Batch Tool
Flickr is lacking of creating a list of arbitrary photos for batch operations. This script provides a "shopping cart" for you to collect your photos to process. After you added a number of photos in cart, you can edit as a batch, make an album, a slideshow, or a mosaic. Items in cart will be saved in greasemonkey storage and will be remembered while you're visiting different pages in flickr.
1. A cart to collect photos you select, up to 100 photos
2. A checkbox attached on the upper-right corner of each photo
3. Editing photos as a batch, beyond sets, tagged photos, or date-based photos