The importance of Al Jazeera in particular has been misunderstood. In the early days of satellite television it was certainly crucial in breaking the monopoly of the state broadcasting systems, and in introducing competition which forced even the Saudi-owned Al Arabiya and other stations to cover a great deal of news simply to avoid losing viewers. During the uprising in Tunisia and later during the Egyptian events, Al Jazeera riveted viewers all over the Arab world and in the Arab diaspora. But the insidious Islamist bent of its coverage is not reflective either of the protests themselves or of a large segment of its viewership. This bent was noticeable in its constant favoritism towards Hamas in covering Palestinian events, and during the Tunisian and Egyptian revolutions in its intensive coverage of the return to Tunis of the Tunisian Islamist Rashed al-Ghannouchi, or the prominence it has given to Egyptian Islamists in the wake of the fall of the Mubarak regime. Similarly, Al Jazeera highlighted the participation in the Algiers demonstration of February 13 of a leading Algerian Islamist, Ali Belhadj, but not the fact that many in the crowd called him an assassin. The point is that Al Jazeera is followed by Arab viewers for its gripping and often daring news footage, but not necessarily in the political line its executives push.
http://mideast.foreignpolicy.com/posts/2011/02/24/reflections_on_the_revolutions_in_tunisia_and_egypt