I received this comment to my last post:
Jungrire, qhqr. V’z n uhzna naq V unir penml znq rapelcgvba fxvyym
This cyphertext does not look like it went through a particularly hard algorithm. In fact, the remenant of punctuation, and the fact that some of the letters show up with what appears to be a “normal” frequency is a big clue that this is, most likely, a Caesar cypher—or a shift of 13 letters. The question is, did the enterprising individual do it themselves, or find a webpage to encrypt their message to me.
I used a webpage to decrypt it. 
The cleartext is:
WHATEVER, DUDE. I’M A HUMAN AND I HAVE CRAZY MAD ENCRYPTION SKILLZ
The use of non-standard spelling of “SKILLZ” could have thrown most people in decrypting this cyphertext, but my on-line decrypter munched right through it. So, yes, some humans are amazingly adept at carrying out secure cryptographic functions; I have no idea what I was thinking in that last post. My bad.
Dammit! I knew I should have run it through the algorithm twice.
I would have thought it was comment spam from some eastern country…
It’s tempting to post some total gibberish in a comment and see if you spend a few hours trying to decrypt it!