Cryptography Game

[TeeKaaY]

I would like to know if any of you guys are interested in this. The game goes as follows:
1. I post an encrypted message.
2. You try to figure out the encryption method and decrypt it.
3. If you guys are having problems, I will post a clue that will help lead you to the solution.

The difficulty will start easy and increase each time a message is solved.

For example:
Encrypted message: yjododsmrmvtu[yrf,rddshr (this is a primal way of encrypting messages)
Decrypted message: this is an encrypted message

[GandElf The Gay]

It is kind of difficult but nothing wrong in giving a try.
Image Steganography would be interesting though