Today's Bonus Blog features an advanced cipher solving site that contains a large number of different cipher solvers. If you can figure out the cipher involved either via some clue on the cache page or some good luck, you'll be on your way. If you don't have any idea of the cipher involved, it can be a bit overwhelming to try them all, but persistence can pay off.
This site may be even more useful to the puzzle maker looking for an obscure cipher. I can't wait to try out the Mexican Army Cipher disk, myself. Perhaps a Cinco de Mayo puzzle cache?
Next week: A Mathematical Wonder