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As Iran's government cracks down on traditional media after the country's disputed presidential election, tech-savvy Iranians have turned to the micro-blogging site Twitter.

"When I'm not connected to Twitter it means that I'm disconnected from the world because the state TV doesn't report many things!" wrote one Twitter user who identifies himself as "hamednz"

Supporters of reformist challenger Mir Hossein Mousavi are more likely to use Twitter and Facebook. Poorer, less-educated voters have flocked to President Mahmoud Ahmadinejad.

Twitter co-founder Biz Stone acknowledged the limited group of users in Iran, who don't necessarily represent the mainstream. "Because Twitter is still a nascent service the sentiment is likely narrow,"

"However, we noticed people creating accounts during the riots presumably because they heard Twitter was the most efficient way to discover and share what was happening in the moment," Stone wrote.