There were a number of attempts by anons to construct different views of the crumbs (which crumbs connect to which other ones) based on signatures. Assuming that each signature referenced a movie title and bore some relationship to a specific set of real-world events that would come into play. A lot of graphics were made and a lot of hypotheses proposed.
I personally was never satisfied that I had a good understanding of how Q was using the signatures, and I went on to other tasks here where I felt I could be more useful/productive.