Also, whenever someone talks about "coded responses," it's a thing we developed to get around the time problem you mentioned. Basically, you use some kind of Internet code site (I like the vigenere encryption), and post your encrypted answer. Then, once everyone has "locked in" their answers, you reveal what your answer was, along with the method of decrypting it.

This prevents someone from just posting gibberish, and then just saying "Oh yeah, I posted the same thing as everyone else"