Twitter has the latest updates on safe-proxy servers for those inside IRAN wishing to get out and publish about the current events.
Current list is as follows (19:48 on Monday 15th June 2009):
WHOIS reveals that these IP addresses are NOT inside IRAN and therefore are unlikely to be shut down as part of the signal jamming referred to in a bbc post found @ http://bit.ly/11YBNo
If you want to help, search for #Iranelection @ http://search.twitter.com/search?q=%23Iranelection
There are calls for a DDOS on the Iranian Gov’t Servers. I think this is a bad idea as it is using fire to fight fire IMHO.
http://twitter.com/#search?q=%22Functioning%20Iran%22 <– follow this tag for the list of functioning IRAN proxies.