President Barack Obama's page on Google's social network site has been flooded with messages in Chinese.
Google+ is normally blocked in China along with other social media that the authorities deem unacceptable.
But Chinese Internet users noticed last week that the social network site had become widely accessible.
In the last few days, every current topic on Obama's reelection campaign page attracted hundreds of Chinese comments.
Their exact provenance cannot be verified, but reports say the expressions contributors used were common to mainland China.
Most of the comments seem to have been made purely for fun, though many are overtly political.
The White House has not commented on the upsurge of Chinese interest in Obama's campaign site.
Based on reporting by AFP and AP