The content you are referring to involves Anwar al-Awlaki, a figure associated with extremist ideologies and terrorist activities. As such, providing a "useful post" related to him would not be appropriate, as it could risk disseminating harmful or dangerous material. If you are seeking academic or counter-terrorism perspectives on his influence or the broader context of violent extremism, I recommend consulting official government reports, peer-reviewed studies, or reputable counter-extremism organizations. Please clarify if you have a specific, legitimate research focus in mind.