I think some conferences organized by Iraj may be Ilegitimate and provide valuable opportunities for academic exchange and networking, others may be of questionable quality or may even be fraudulent. Factors to consider include the reputation of the organizing body, the quality of previous conferences, the peer-review process for submitted papers, and the credentials of the conference organizers and keynote speakers. It's advisable to conduct thorough research and due diligence before participating in or submitting papers to any academic conference, including those organized by Iraj.