Is it allowed for a Muslim to create a social media platform similar to Facebook or YouTube? Will I be accountable for the sins of someone who posts without wearing Hijab, considering it is impossible for me to monitor every post?
It is allowed for a Muslim to create a social media platform which can help spreading useful knowledge, but he has to monitor it to prevent misuse. If you know that your platform will be misused with out your control, then you should avoid making it open for misuse.
Wassalam.