From Rob Novak’s blog:

SNAPP-On Modules for Lotus Quickr are quite simply enhancements to the core product that Quickr users around the world need to make their collaboration experience more productive, easier, and more intuitive. Each module extends the “My Places” area of the product, adding functionality, new tabs, and even customizations unique to a particular company. The first two generally available SNAPP-On Modules are “Favorites” and “Custom HTML,” with several more planned and options for custom modules.

Read more about it here.