Political reformists in Iran have long accused Irib, the state-run broadcaster, of biased reporting against their organisations. <br /><br />With the fate of the presidency up for grabs, many have turned to new media outlets including social networking sites and text messaging as a way of making themselves heard in a closely-fought campaign. <br /><br />Al Jazeera's Alireza Ronaghi reports from Tehran on the race to master new technology and win Iranian votes.