TO GO WITH China-politics-congress-Internet,FOCUS by Tom Hancock Two Chinese men use their laptop computers at a cafe in Beijing on November 2, 2012. China has witnessed explosive growth in Internet usage since the last Communist Party transition in 2002, with the online community of 538 million posing a huge challenge to the party's attempts to shape public opinion. AFP PHOTO / WANG ZHAO (Photo credit should read WANG ZHAO/AFP/Getty Images)