An analysis of Iran's Internet reveals a deep level of diversity, with a level of surveillance (and surveillance-dodging) that goes just as deep.

During this week's post-election crisis, so many reflections have been bouncing back and forth in this online hall of mirrors that it's sometimes hard to get a fix on where anyone stands - geographically or politically.

Inside Iran, proxy servers are like passport control points: Outgoing data traffic is checked by the filtering system on the Internet service's proxy server, and if it's heading for a forbidden place, it's blocked from going farther.