use different twitter #hashtags? some tags blocked?

Seems like some hashtags are being blocked.

this is correct. use #iran9.

Just switching hashtags won't work for long. We need to get them to start using encrypted connections.

How to get through #IranElection censorship on Twitter

Haven't tried it myself but it should work

speaking of that:

That gives an encrypted connection.

Been hearing that the hashtags are not blocked, however separated for use.

#iranelections for international discussion
#iran9 for info coming out
#gr88 for info going in

Also, if you know anyone who's DDoSing, it seems that harms the people on Twitter just as much as the government, if not more.

It's been confirmed the #IranElection hashtag is not blocked in Iran, but it's recommended Iranians go through https://twitter.com (note the s) for security.

Proxies and Tags

Specific hash tags are not being blocked.

There's no reason to (twitter.com is completely blocked in Iran right now), and it wouldn't help anyway (proxied users are probably using https and getting past any filters).

Continue using #iranelection
Continue building private proxies.