I have a friend, who I haven't heard from since the election. I live in America, we are just online friends for a long time but still we are close. I don't where she is now, I've been crying for days because I hope nothing happened to her. I don't even have that much information other than her name and date of birth and I don't want to give it out here unless it's safe. I just want to hear from her! It's so painful.
I'm not sure how much people can help. You can do some checking yourself, without revealing the name in these two places. This blog has a list of those known to be killed & missing. Revolutionary Road...: List of Killed,Arrested and Released ! It is not complete. Not being on the list doesn't mean they are not killed or missing. But, then again, maybe they only are having a hard time getting on the net. Also, the Guardian (UK paper) is trying to make a list as well, here: Iran election: faces of the dead and detained | World news | guardian.co.uk You can also check there.
Best of luck finding your friend, I too live in the states and is looking for a friend of the family's who has not been heard of for months. Best of luck.