Applications A/B/C at project X. It can be multiple applications per project. It records it all: run time, OS, memory usage, checkpointing, disk space, GPU, and more. The point of the project is to record all kinds of information about projects, as a resource for us crunchers. Read more here. The badges are just something to have fun with, in addition to the credits.
Also, I thought we have been telling all our members to always attach to WUprop, for the "free" credits. It's right there on the front page. Maybe an email should go out about it (again), to remind members.