Tiapan
Grumpy Old Man
About the Challenge
http://www.theinimitablequran.com/uniquelitform.pdf
The Challenge of the Quran - English (some other related links at bottom)
Generally, for the challenge to be valid at a guess, it must be in Arabic (as the Qur'an is in Arabic), it must have a similar feel and rhyme to it, and it must be by one author, unchanged, and to talk about similar topics. Some people say something about.. 19, I think, though I don't know much about this (the claim that numbers throughout the Qur'an are multiples of 19 or something? I forget).
www.suralikeit.com
A website where people post their surah's like the Qur'an (though, who judges them?). I believe that possibly an atheist or a non-Muslim who has studied the Qur'an and has knowledge of classical Arabic would be able to judge it.
I tried www.suralikeit.com
I can see a dozen or so Surats? in arabic. Is there an english translation for each of these?
How do you submit a Surat to this site?