What can be done to help the protesting students/youth/Mousavi supporters in Iran?

Unfortunately, I don’t think that there is anything non-Iranians can do right now without it being seen as interference.

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There is nothing to do. I suppose you could start a blog.

by staying the f*ck out?
The Iranian door has been battered by meddling superpowers
for years, in the pursuit of oil, Iran, like many other so called rogue states
have forged a siege mentality, which is actually impeding political reform.

If you’re comp-savvy, you can set up a proxy server for Iranians to use:

http://blog.austinheap.com/2009/06/15/how-to-setup-a-proxy-for-iran-citizens-for-windows/

You can also just make a show of support. Take a picture of yourself in green clothes and upload it on a Facebook group. My friend is organizing a Flickr page gathering such pictures. It’s important for Iranians to realize that the world is with them and sympathizes with their struggle. That’s quite different from “meddling.”

@mammal I don’t mean as a country, I mean as individuals.

Maybe an irrelevant comment, but I am old enough to remember how we rooted for Fidel Castro when he was fighting to overthrow Batista in 1958. Schoolchildren were encouraged to regard him as a revolutionary hero much like our own. I think we’re inclined to see George Washingtons here and there even when the resemblance is slight.