
Last week, the US Department of State urged microblogging service Twitter to delay an upgrade to its technology that would have disrupted daytime service to people in Iran.
Google accelerated the release of a Persian translation version of its online service last week to "improve access to information" for people inside and outside of Iran.
"Probably what sparked (the Chinese crackdown on Google), or made it particularly relevant at the moment, is the US government and US Internet companies being seen as having some kind of role in prolonging the unrest in Iran," Lindsay said.