Ah... I stand corrected. The Democrats had Al Jazeera in attendance but they took down the banner. The Republicans had Al Jazeera in attendance, but they left the banner up. Kind of makes the people in that article you posted pretty big hypocrites, and clearly, the Republicans don't mind anyone knowing that they had Al Jazeera at their convention.

http://www.usatoday.com/news/politicselections/2004-08-18-al-jazeera-usat_x.htm?csp=36

"Al-Jazeera will have a sign hanging outside its skybox and above the delegates at the Republican National Convention, the Arab news network and an RNC spokesman said Wednesday."