The owner of the sign, Don Woodsmall's "brilliant counter-offer"? He will take down the sign if any one of its statements is shown to be false. So far, no Muslim, including noone from CAIR, has managed to do that.
Interesting that Muslims immediately know who he was talking about, even though the sign doesn't mention Islam or Muslims! Now how did they do that, if it weren't for the fact that the statements are recorded in Islam's core documents, the Koran, Hadith and Sirah?
And remember that Muhammad is known by Muslims as the "Perfect Man".
How dare the representatives of Islam, http://www.danielpipes.org/biblio_cair.phpCAIR and the like, demand this be pulled down when every one of these statements is in Islamic source documents: the Koran, Hadith and Sirah. All quoted in the article.
No one would make the same demands of any other religion. Not that you could make anything like the same declarations about Jesus. Or Buddha. Or Ganesh. Or The Great Spaghetti Monster.
Read all about it here.