> Most editors seem to agree that Al Jazeera English and especially Al Jazeera Arabic are biased sources on the Arab–Israeli conflict and on topics for which the Qatari government has a conflict of interest.
> Al Jazeera's live blogs should be treated with caution, per the policy on news blogs.
The note about bias does nothing to prevent it from being used. Wikipedia doesn't really have any policy of avoiding biased sources; see WP:BIASED.
The live blog warning is mostly ignored in practice, even though it reflects a broader policy (WP:NEWSBLOG). Al Jazeera's live blog alone is probably used more than any other source in the topic area.
> The note about bias does nothing to prevent it from being used.
If you actually edit in this topic area, you should know that its bias comes up all the time. Almost every talk page on I/P is littered with endless debate over whether Al Jazeera covered this or that accurately.