Excerpt:
Sermons from Anwar al-Awlaki, the radical cleric said to be linked to multiple terrorist plots against Britain and the United States, remain on YouTube despite calls for them to be taken down.
The news follows the conviction of Rajib Karim, a former British Airways computer specialist, for terrorism offences after being inspired by Awalki to explore ways of staging al-Qaida style attacks.
YouTube has been under pressure to remove sermons from Awlaki, who the US say is the "spiritual leader" of al-Qaida in the Arabian peninsula and is currently holed up in Yemen.